[{"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Mechanisms of OCT4-SOX2 motif readout on nucleosomes","status":"public","day":"23","publication_identifier":{"eissn":["1095-9203"],"issn":["0036-8075"]},"scopus_import":"1","volume":368,"publication":"Science","publication_status":"published","publisher":"American Association for the Advancement of Science ","author":[{"first_name":"Alicia Kathleen","orcid":"0000-0002-6080-839X","last_name":"Michael","full_name":"Michael, Alicia Kathleen","id":"6437c950-2a03-11ee-914d-d6476dd7b75c"},{"first_name":"Ralph S.","last_name":"Grand","full_name":"Grand, Ralph S."},{"first_name":"Luke","last_name":"Isbel","full_name":"Isbel, Luke"},{"full_name":"Cavadini, Simone","first_name":"Simone","last_name":"Cavadini"},{"last_name":"Kozicka","first_name":"Zuzanna","full_name":"Kozicka, Zuzanna"},{"last_name":"Kempf","first_name":"Georg","full_name":"Kempf, Georg"},{"full_name":"Bunker, Richard D.","last_name":"Bunker","first_name":"Richard D."},{"full_name":"Schenk, Andreas D.","first_name":"Andreas D.","last_name":"Schenk"},{"first_name":"Alexandra","last_name":"Graff-Meyer","full_name":"Graff-Meyer, Alexandra"},{"last_name":"Pathare","first_name":"Ganesh R.","full_name":"Pathare, Ganesh R."},{"full_name":"Weiss, Joscha","first_name":"Joscha","last_name":"Weiss"},{"last_name":"Matsumoto","first_name":"Syota","full_name":"Matsumoto, Syota"},{"last_name":"Burger","first_name":"Lukas","full_name":"Burger, Lukas"},{"last_name":"Schübeler","first_name":"Dirk","full_name":"Schübeler, Dirk"},{"full_name":"Thomä, Nicolas H.","last_name":"Thomä","first_name":"Nicolas H."}],"intvolume":"       368","quality_controlled":"1","article_type":"original","article_processing_charge":"No","year":"2020","extern":"1","doi":"10.1126/science.abb0074","_id":"15152","abstract":[{"text":"Transcription factors (TFs) regulate gene expression through chromatin where nucleosomes restrict DNA access. To study how TFs bind nucleosome-occupied motifs, we focused on the reprogramming factors OCT4 and SOX2 in mouse embryonic stem cells. We determined TF engagement throughout a nucleosome at base-pair resolution in vitro, enabling structure determination by cryo–electron microscopy at two preferred positions. Depending on motif location, OCT4 and SOX2 differentially distort nucleosomal DNA. At one position, OCT4-SOX2 removes DNA from histone H2A and histone H3; however, at an inverted motif, the TFs only induce local DNA distortions. OCT4 uses one of its two DNA-binding domains to engage DNA in both structures, reading out a partial motif. These findings explain site-specific nucleosome engagement by the pluripotency factors OCT4 and SOX2, and they reveal how TFs distort nucleosomes to access chromatinized motifs.","lang":"eng"}],"date_updated":"2024-03-25T12:29:34Z","page":"1460-1465","citation":{"mla":"Michael, Alicia K., et al. “Mechanisms of OCT4-SOX2 Motif Readout on Nucleosomes.” <i>Science</i>, vol. 368, no. 6498, American Association for the Advancement of Science , 2020, pp. 1460–65, doi:<a href=\"https://doi.org/10.1126/science.abb0074\">10.1126/science.abb0074</a>.","short":"A.K. Michael, R.S. Grand, L. Isbel, S. Cavadini, Z. Kozicka, G. Kempf, R.D. Bunker, A.D. Schenk, A. Graff-Meyer, G.R. Pathare, J. Weiss, S. Matsumoto, L. Burger, D. Schübeler, N.H. Thomä, Science 368 (2020) 1460–1465.","apa":"Michael, A. K., Grand, R. S., Isbel, L., Cavadini, S., Kozicka, Z., Kempf, G., … Thomä, N. H. (2020). Mechanisms of OCT4-SOX2 motif readout on nucleosomes. <i>Science</i>. American Association for the Advancement of Science . <a href=\"https://doi.org/10.1126/science.abb0074\">https://doi.org/10.1126/science.abb0074</a>","ieee":"A. K. Michael <i>et al.</i>, “Mechanisms of OCT4-SOX2 motif readout on nucleosomes,” <i>Science</i>, vol. 368, no. 6498. American Association for the Advancement of Science , pp. 1460–1465, 2020.","ama":"Michael AK, Grand RS, Isbel L, et al. Mechanisms of OCT4-SOX2 motif readout on nucleosomes. <i>Science</i>. 2020;368(6498):1460-1465. doi:<a href=\"https://doi.org/10.1126/science.abb0074\">10.1126/science.abb0074</a>","ista":"Michael AK, Grand RS, Isbel L, Cavadini S, Kozicka Z, Kempf G, Bunker RD, Schenk AD, Graff-Meyer A, Pathare GR, Weiss J, Matsumoto S, Burger L, Schübeler D, Thomä NH. 2020. Mechanisms of OCT4-SOX2 motif readout on nucleosomes. Science. 368(6498), 1460–1465.","chicago":"Michael, Alicia K., Ralph S. Grand, Luke Isbel, Simone Cavadini, Zuzanna Kozicka, Georg Kempf, Richard D. Bunker, et al. “Mechanisms of OCT4-SOX2 Motif Readout on Nucleosomes.” <i>Science</i>. American Association for the Advancement of Science , 2020. <a href=\"https://doi.org/10.1126/science.abb0074\">https://doi.org/10.1126/science.abb0074</a>."},"date_published":"2020-04-23T00:00:00Z","language":[{"iso":"eng"}],"month":"04","issue":"6498","date_created":"2024-03-21T07:54:44Z","oa_version":"None","type":"journal_article"},{"date_published":"2020-02-26T00:00:00Z","citation":{"ista":"Fribourgh JL, Srivastava A, Sandate CR, Michael AK, Hsu PL, Rakers C, Nguyen LT, Torgrimson MR, Parico GCG, Tripathi S, Zheng N, Lander GC, Hirota T, Tama F, Partch CL. 2020. Dynamics at the serine loop underlie differential affinity of cryptochromes for CLOCK:BMAL1 to control circadian timing. eLife. 9, 55275.","chicago":"Fribourgh, Jennifer L, Ashutosh Srivastava, Colby R Sandate, Alicia K. Michael, Peter L Hsu, Christin Rakers, Leslee T Nguyen, et al. “Dynamics at the Serine Loop Underlie Differential Affinity of Cryptochromes for CLOCK:BMAL1 to Control Circadian Timing.” <i>ELife</i>. eLife Sciences Publications, 2020. <a href=\"https://doi.org/10.7554/elife.55275\">https://doi.org/10.7554/elife.55275</a>.","ieee":"J. L. Fribourgh <i>et al.</i>, “Dynamics at the serine loop underlie differential affinity of cryptochromes for CLOCK:BMAL1 to control circadian timing,” <i>eLife</i>, vol. 9. eLife Sciences Publications, 2020.","ama":"Fribourgh JL, Srivastava A, Sandate CR, et al. Dynamics at the serine loop underlie differential affinity of cryptochromes for CLOCK:BMAL1 to control circadian timing. <i>eLife</i>. 2020;9. doi:<a href=\"https://doi.org/10.7554/elife.55275\">10.7554/elife.55275</a>","mla":"Fribourgh, Jennifer L., et al. “Dynamics at the Serine Loop Underlie Differential Affinity of Cryptochromes for CLOCK:BMAL1 to Control Circadian Timing.” <i>ELife</i>, vol. 9, 55275, eLife Sciences Publications, 2020, doi:<a href=\"https://doi.org/10.7554/elife.55275\">10.7554/elife.55275</a>.","short":"J.L. Fribourgh, A. Srivastava, C.R. Sandate, A.K. Michael, P.L. Hsu, C. Rakers, L.T. Nguyen, M.R. Torgrimson, G.C.G. Parico, S. Tripathi, N. Zheng, G.C. Lander, T. Hirota, F. Tama, C.L. Partch, ELife 9 (2020).","apa":"Fribourgh, J. L., Srivastava, A., Sandate, C. R., Michael, A. K., Hsu, P. L., Rakers, C., … Partch, C. L. (2020). Dynamics at the serine loop underlie differential affinity of cryptochromes for CLOCK:BMAL1 to control circadian timing. <i>ELife</i>. eLife Sciences Publications. <a href=\"https://doi.org/10.7554/elife.55275\">https://doi.org/10.7554/elife.55275</a>"},"abstract":[{"lang":"eng","text":"Mammalian circadian rhythms are generated by a transcription-based feedback loop in which CLOCK:BMAL1 drives transcription of its repressors (PER1/2, CRY1/2), which ultimately interact with CLOCK:BMAL1 to close the feedback loop with ~24 hr periodicity. Here we pinpoint a key difference between CRY1 and CRY2 that underlies their differential strengths as transcriptional repressors. Both cryptochromes bind the BMAL1 transactivation domain similarly to sequester it from coactivators and repress CLOCK:BMAL1 activity. However, we find that CRY1 is recruited with much higher affinity to the PAS domain core of CLOCK:BMAL1, allowing it to serve as a stronger repressor that lengthens circadian period. We discovered a dynamic serine-rich loop adjacent to the secondary pocket in the photolyase homology region (PHR) domain that regulates differential binding of cryptochromes to the PAS domain core of CLOCK:BMAL1. Notably, binding of the co-repressor PER2 remodels the serine loop of CRY2, making it more CRY1-like and enhancing its affinity for CLOCK:BMAL1."}],"_id":"15153","date_updated":"2024-03-25T12:25:02Z","language":[{"iso":"eng"}],"oa":1,"date_created":"2024-03-21T07:55:12Z","oa_version":"Published Version","type":"journal_article","article_number":"55275","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Dynamics at the serine loop underlie differential affinity of cryptochromes for CLOCK:BMAL1 to control circadian timing","scopus_import":"1","author":[{"full_name":"Fribourgh, Jennifer L","last_name":"Fribourgh","first_name":"Jennifer L"},{"first_name":"Ashutosh","last_name":"Srivastava","full_name":"Srivastava, Ashutosh"},{"last_name":"Sandate","first_name":"Colby R","full_name":"Sandate, Colby R"},{"id":"6437c950-2a03-11ee-914d-d6476dd7b75c","full_name":"Michael, Alicia Kathleen","first_name":"Alicia Kathleen","last_name":"Michael"},{"full_name":"Hsu, Peter L","first_name":"Peter L","last_name":"Hsu"},{"full_name":"Rakers, Christin","last_name":"Rakers","first_name":"Christin"},{"last_name":"Nguyen","first_name":"Leslee T","full_name":"Nguyen, Leslee T"},{"full_name":"Torgrimson, Megan R","last_name":"Torgrimson","first_name":"Megan R"},{"first_name":"Gian Carlo G","last_name":"Parico","full_name":"Parico, Gian Carlo G"},{"first_name":"Sarvind","last_name":"Tripathi","full_name":"Tripathi, Sarvind"},{"last_name":"Zheng","first_name":"Ning","full_name":"Zheng, Ning"},{"full_name":"Lander, Gabriel C","last_name":"Lander","first_name":"Gabriel C"},{"full_name":"Hirota, Tsuyoshi","last_name":"Hirota","first_name":"Tsuyoshi"},{"first_name":"Florence","last_name":"Tama","full_name":"Tama, Florence"},{"full_name":"Partch, Carrie L","last_name":"Partch","first_name":"Carrie L"}],"intvolume":"         9","article_type":"original","year":"2020","keyword":["General Immunology and Microbiology","General Biochemistry","Genetics and Molecular Biology","General Medicine","General Neuroscience"],"article_processing_charge":"No","extern":"1","doi":"10.7554/elife.55275","month":"02","main_file_link":[{"url":"https://doi.org/10.7554/eLife.55275","open_access":"1"}],"day":"26","status":"public","publication_identifier":{"issn":["2050-084X"]},"publication":"eLife","volume":9,"publisher":"eLife Sciences Publications","publication_status":"published","quality_controlled":"1"},{"extern":"1","article_processing_charge":"No","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"year":"2020","article_type":"original","intvolume":"       501","author":[{"first_name":"Ilaria","orcid":"0000-0002-4770-5388","last_name":"Caiazzo","id":"8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d","full_name":"Caiazzo, Ilaria"},{"full_name":"Heyl, Jeremy","first_name":"Jeremy","last_name":"Heyl"}],"scopus_import":"1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Polarization of accreting X-ray pulsars. I. A new model","type":"journal_article","date_created":"2024-03-26T10:33:43Z","oa_version":"Preprint","oa":1,"issue":"1","language":[{"iso":"eng"}],"_id":"15220","date_updated":"2024-10-14T12:32:49Z","abstract":[{"text":"A new window is opening in high-energy astronomy: X-ray polarimetry. With many missions currently under development and scheduled to launch as early as 2021, observations of the X-ray polarization of accreting X-ray pulsars will soon be available. As polarization is particularly sensitive to the geometry of the emission region, the upcoming polarimeters will shed new light on the emission mechanism of these objects, provided that we have sound theoretical models that agree with current spectroscopic and timing observation and that can make predictions of the polarization parameters of the emission. We here present a new model for the polarized emission of accreting X-ray pulsars in the accretion column scenario that for the first time takes into account the macroscopic structure and dynamics of the accretion region and the propagation of the radiation towards the observer, including relativistic beaming, gravitational lensing, and quantum electrodynamics. In this paper, we present all the details of the model, while in a companion paper, we apply our model to predict the polarization parameters of the bright X-ray pulsar Hercules X-1.","lang":"eng"}],"citation":{"ista":"Caiazzo I, Heyl J. 2020. Polarization of accreting X-ray pulsars. I. A new model. Monthly Notices of the Royal Astronomical Society. 501(1), 109–128.","chicago":"Caiazzo, Ilaria, and Jeremy Heyl. “Polarization of Accreting X-Ray Pulsars. I. A New Model.” <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press, 2020. <a href=\"https://doi.org/10.1093/mnras/staa3428\">https://doi.org/10.1093/mnras/staa3428</a>.","ama":"Caiazzo I, Heyl J. Polarization of accreting X-ray pulsars. I. A new model. <i>Monthly Notices of the Royal Astronomical Society</i>. 2020;501(1):109-128. doi:<a href=\"https://doi.org/10.1093/mnras/staa3428\">10.1093/mnras/staa3428</a>","ieee":"I. Caiazzo and J. Heyl, “Polarization of accreting X-ray pulsars. I. A new model,” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 501, no. 1. Oxford University Press, pp. 109–128, 2020.","short":"I. Caiazzo, J. Heyl, Monthly Notices of the Royal Astronomical Society 501 (2020) 109–128.","mla":"Caiazzo, Ilaria, and Jeremy Heyl. “Polarization of Accreting X-Ray Pulsars. I. A New Model.” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 501, no. 1, Oxford University Press, 2020, pp. 109–28, doi:<a href=\"https://doi.org/10.1093/mnras/staa3428\">10.1093/mnras/staa3428</a>.","apa":"Caiazzo, I., &#38; Heyl, J. (2020). Polarization of accreting X-ray pulsars. I. A new model. <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press. <a href=\"https://doi.org/10.1093/mnras/staa3428\">https://doi.org/10.1093/mnras/staa3428</a>"},"date_published":"2020-11-05T00:00:00Z","page":"109-128","external_id":{"arxiv":["2009.00631"]},"quality_controlled":"1","publication_status":"published","publisher":"Oxford University Press","volume":501,"publication":"Monthly Notices of the Royal Astronomical Society","publication_identifier":{"issn":["0035-8711"],"eissn":["1365-2966"]},"arxiv":1,"status":"public","day":"05","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2009.00631","open_access":"1"}],"month":"11","doi":"10.1093/mnras/staa3428"},{"doi":"10.1093/mnras/staa3429","month":"11","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2009.00634","open_access":"1"}],"publication_identifier":{"eissn":["1365-2966"],"issn":["0035-8711"]},"arxiv":1,"status":"public","day":"05","publication_status":"published","publisher":"Oxford University Press","volume":501,"publication":"Monthly Notices of the Royal Astronomical Society","external_id":{"arxiv":["2009.00634"]},"quality_controlled":"1","language":[{"iso":"eng"}],"_id":"15221","abstract":[{"lang":"eng","text":"We employ our new model for the polarized emission of accreting X-ray pulsars to describe the emission from the luminous X-ray pulsar Hercules X-1. In contrast with previous works, our model predicts the polarization parameters independently of spectral formation, and considers the structure and dynamics of the accretion column, as well as the additional effects on propagation due to general relativity and quantum electrodynamics. We find that our model can describe the observed pulse fraction and the pulse shape of the main peak, as well as the modulation of the cyclotron line with phase. We pick two geometries, assuming a single accretion column or two columns at the magnetic poles, that can describe current observations of pulse shape and cyclotron modulation with phase. Both models predict a high polarization fraction, between 60 and 80 per cent in the 1–10 keV range, that is phase and energy dependent, and that peaks at the same phase as the intensity. The phase and energy dependence of the polarization fraction and of the polarization angle can help discern between the different geometries."}],"date_updated":"2024-10-14T12:32:58Z","page":"129-136","date_published":"2020-11-05T00:00:00Z","citation":{"apa":"Caiazzo, I., &#38; Heyl, J. (2020). Polarization of accreting X-ray pulsars – II. Hercules X-1. <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press. <a href=\"https://doi.org/10.1093/mnras/staa3429\">https://doi.org/10.1093/mnras/staa3429</a>","short":"I. Caiazzo, J. Heyl, Monthly Notices of the Royal Astronomical Society 501 (2020) 129–136.","mla":"Caiazzo, Ilaria, and Jeremy Heyl. “Polarization of Accreting X-Ray Pulsars – II. Hercules X-1.” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 501, no. 1, Oxford University Press, 2020, pp. 129–36, doi:<a href=\"https://doi.org/10.1093/mnras/staa3429\">10.1093/mnras/staa3429</a>.","chicago":"Caiazzo, Ilaria, and Jeremy Heyl. “Polarization of Accreting X-Ray Pulsars – II. Hercules X-1.” <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press, 2020. <a href=\"https://doi.org/10.1093/mnras/staa3429\">https://doi.org/10.1093/mnras/staa3429</a>.","ista":"Caiazzo I, Heyl J. 2020. Polarization of accreting X-ray pulsars – II. Hercules X-1. Monthly Notices of the Royal Astronomical Society. 501(1), 129–136.","ama":"Caiazzo I, Heyl J. Polarization of accreting X-ray pulsars – II. Hercules X-1. <i>Monthly Notices of the Royal Astronomical Society</i>. 2020;501(1):129-136. doi:<a href=\"https://doi.org/10.1093/mnras/staa3429\">10.1093/mnras/staa3429</a>","ieee":"I. Caiazzo and J. Heyl, “Polarization of accreting X-ray pulsars – II. Hercules X-1,” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 501, no. 1. Oxford University Press, pp. 129–136, 2020."},"oa":1,"issue":"1","type":"journal_article","oa_version":"Preprint","date_created":"2024-03-26T10:34:03Z","scopus_import":"1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Polarization of accreting X-ray pulsars – II. Hercules X-1","article_type":"original","intvolume":"       501","author":[{"full_name":"Caiazzo, Ilaria","id":"8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d","first_name":"Ilaria","orcid":"0000-0002-4770-5388","last_name":"Caiazzo"},{"first_name":"Jeremy","last_name":"Heyl","full_name":"Heyl, Jeremy"}],"extern":"1","article_processing_charge":"No","year":"2020","keyword":["Space and Planetary Science","Astronomy and Astrophysics"]},{"citation":{"ieee":"K. B. Burdge <i>et al.</i>, “A systematic search of Zwicky transient facility data for ultracompact binary LISA-detectable gravitational-wave sources,” <i>The Astrophysical Journal</i>, vol. 905, no. 1. American Astronomical Society, 2020.","ama":"Burdge KB, Prince TA, Fuller J, et al. A systematic search of Zwicky transient facility data for ultracompact binary LISA-detectable gravitational-wave sources. <i>The Astrophysical Journal</i>. 2020;905(1). doi:<a href=\"https://doi.org/10.3847/1538-4357/abc261\">10.3847/1538-4357/abc261</a>","ista":"Burdge KB, Prince TA, Fuller J, Kaplan DL, Marsh TR, Tremblay P-E, Zhuang Z, Bellm EC, Caiazzo I, Coughlin MW, Dhillon VS, Gaensicke B, Rodríguez-Gil P, Graham MJ, Hermes J, Kupfer T, Littlefair SP, Mróz P, Phinney ES, Roestel J van, Yao Y, Dekany RG, Drake AJ, Duev DA, Hale D, Feeney M, Helou G, Kaye S, Mahabal AA, Masci FJ, Riddle R, Smith R, Soumagnac MT, Kulkarni SR. 2020. A systematic search of Zwicky transient facility data for ultracompact binary LISA-detectable gravitational-wave sources. The Astrophysical Journal. 905(1), 32.","chicago":"Burdge, Kevin B., Thomas A. Prince, Jim Fuller, David L. Kaplan, Thomas R. Marsh, Pier-Emmanuel Tremblay, Zhuyun Zhuang, et al. “A Systematic Search of Zwicky Transient Facility Data for Ultracompact Binary LISA-Detectable Gravitational-Wave Sources.” <i>The Astrophysical Journal</i>. American Astronomical Society, 2020. <a href=\"https://doi.org/10.3847/1538-4357/abc261\">https://doi.org/10.3847/1538-4357/abc261</a>.","short":"K.B. Burdge, T.A. Prince, J. Fuller, D.L. Kaplan, T.R. Marsh, P.-E. Tremblay, Z. Zhuang, E.C. Bellm, I. Caiazzo, M.W. Coughlin, V.S. Dhillon, B. Gaensicke, P. Rodríguez-Gil, M.J. Graham, J. Hermes, T. Kupfer, S.P. Littlefair, P. Mróz, E.S. Phinney, J. van Roestel, Y. Yao, R.G. Dekany, A.J. Drake, D.A. Duev, D. Hale, M. Feeney, G. Helou, S. Kaye, A.A. Mahabal, F.J. Masci, R. Riddle, R. Smith, M.T. Soumagnac, S.R. Kulkarni, The Astrophysical Journal 905 (2020).","mla":"Burdge, Kevin B., et al. “A Systematic Search of Zwicky Transient Facility Data for Ultracompact Binary LISA-Detectable Gravitational-Wave Sources.” <i>The Astrophysical Journal</i>, vol. 905, no. 1, 32, American Astronomical Society, 2020, doi:<a href=\"https://doi.org/10.3847/1538-4357/abc261\">10.3847/1538-4357/abc261</a>.","apa":"Burdge, K. B., Prince, T. A., Fuller, J., Kaplan, D. L., Marsh, T. R., Tremblay, P.-E., … Kulkarni, S. R. (2020). A systematic search of Zwicky transient facility data for ultracompact binary LISA-detectable gravitational-wave sources. <i>The Astrophysical Journal</i>. American Astronomical Society. <a href=\"https://doi.org/10.3847/1538-4357/abc261\">https://doi.org/10.3847/1538-4357/abc261</a>"},"date_published":"2020-12-09T00:00:00Z","_id":"15223","abstract":[{"lang":"eng","text":"Using photometry collected with the Zwicky Transient Facility, we are conducting an ongoing survey for binary systems with short orbital periods (\r\n with the goal of identifying new gravitational-wave sources detectable by the upcoming Laser Interferometer Space Antenna (LISA). We present a sample of 15 binary systems discovered thus far, with orbital periods ranging from 6.91 to 56.35 minutes. Of the 15 systems, seven are eclipsing systems that do not show signs of significant mass transfer. Additionally, we have discovered two AM Canum Venaticorum systems and six systems exhibiting primarily ellipsoidal variations in their lightcurves. We present follow-up spectroscopy and high-speed photometry confirming the nature of these systems, estimates of their LISA signal-to-noise ratios, and a discussion of their physical characteristics."}],"date_updated":"2024-04-03T14:13:50Z","language":[{"iso":"eng"}],"oa_version":"Preprint","date_created":"2024-03-26T10:34:42Z","type":"journal_article","article_number":"32","issue":"1","oa":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"A systematic search of Zwicky transient facility data for ultracompact binary LISA-detectable gravitational-wave sources","scopus_import":"1","year":"2020","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"article_processing_charge":"No","extern":"1","author":[{"full_name":"Burdge, Kevin B.","first_name":"Kevin B.","last_name":"Burdge"},{"full_name":"Prince, Thomas A.","last_name":"Prince","first_name":"Thomas A."},{"first_name":"Jim","last_name":"Fuller","full_name":"Fuller, Jim"},{"full_name":"Kaplan, David L.","last_name":"Kaplan","first_name":"David L."},{"full_name":"Marsh, Thomas R.","last_name":"Marsh","first_name":"Thomas R."},{"full_name":"Tremblay, Pier-Emmanuel","last_name":"Tremblay","first_name":"Pier-Emmanuel"},{"full_name":"Zhuang, Zhuyun","last_name":"Zhuang","first_name":"Zhuyun"},{"last_name":"Bellm","first_name":"Eric C.","full_name":"Bellm, Eric C."},{"id":"8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d","full_name":"Caiazzo, Ilaria","first_name":"Ilaria","last_name":"Caiazzo","orcid":"0000-0002-4770-5388"},{"full_name":"Coughlin, Michael W.","first_name":"Michael W.","last_name":"Coughlin"},{"full_name":"Dhillon, Vik S.","first_name":"Vik S.","last_name":"Dhillon"},{"first_name":"Boris","last_name":"Gaensicke","full_name":"Gaensicke, Boris"},{"full_name":"Rodríguez-Gil, Pablo","last_name":"Rodríguez-Gil","first_name":"Pablo"},{"full_name":"Graham, Matthew J.","first_name":"Matthew J.","last_name":"Graham"},{"full_name":"Hermes, JJ","last_name":"Hermes","first_name":"JJ"},{"first_name":"Thomas","last_name":"Kupfer","full_name":"Kupfer, Thomas"},{"full_name":"Littlefair, S. P.","last_name":"Littlefair","first_name":"S. P."},{"first_name":"Przemek","last_name":"Mróz","full_name":"Mróz, Przemek"},{"last_name":"Phinney","first_name":"E. S.","full_name":"Phinney, E. S."},{"full_name":"Roestel, Jan van","last_name":"Roestel","first_name":"Jan van"},{"last_name":"Yao","first_name":"Yuhan","full_name":"Yao, Yuhan"},{"full_name":"Dekany, Richard G.","first_name":"Richard G.","last_name":"Dekany"},{"full_name":"Drake, Andrew J.","first_name":"Andrew J.","last_name":"Drake"},{"first_name":"Dmitry A.","last_name":"Duev","full_name":"Duev, Dmitry A."},{"full_name":"Hale, David","first_name":"David","last_name":"Hale"},{"first_name":"Michael","last_name":"Feeney","full_name":"Feeney, Michael"},{"last_name":"Helou","first_name":"George","full_name":"Helou, George"},{"first_name":"Stephen","last_name":"Kaye","full_name":"Kaye, Stephen"},{"first_name":"Ashish. A.","last_name":"Mahabal","full_name":"Mahabal, Ashish. A."},{"first_name":"Frank J.","last_name":"Masci","full_name":"Masci, Frank J."},{"last_name":"Riddle","first_name":"Reed","full_name":"Riddle, Reed"},{"first_name":"Roger","last_name":"Smith","full_name":"Smith, Roger"},{"full_name":"Soumagnac, Maayane T.","first_name":"Maayane T.","last_name":"Soumagnac"},{"full_name":"Kulkarni, S. R.","last_name":"Kulkarni","first_name":"S. R."}],"intvolume":"       905","article_type":"original","month":"12","doi":"10.3847/1538-4357/abc261","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2009.02567","open_access":"1"}],"publication":"The Astrophysical Journal","volume":905,"publisher":"American Astronomical Society","publication_status":"published","day":"09","status":"public","arxiv":1,"publication_identifier":{"eissn":["1538-4357"],"issn":["0004-637X"]},"quality_controlled":"1","external_id":{"arxiv":["2009.02567"]}},{"month":"09","doi":"10.3847/2041-8213/abb5f7","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2009.03374","open_access":"1"}],"volume":901,"publication":"The Astrophysical Journal Letters","publication_status":"published","publisher":"American Astronomical Society","status":"public","day":"22","publication_identifier":{"issn":["2041-8205"],"eissn":["2041-8213"]},"arxiv":1,"quality_controlled":"1","external_id":{"arxiv":["2009.03374"]},"_id":"15224","abstract":[{"text":"When a star exhausts its nuclear fuel, it either explodes as a supernova or more quiescently becomes a white dwarf, an object about half the mass of our Sun with a radius of about that of the Earth. About one-fifth of white dwarfs exhibit the presence of magnetic fields, whose origin has long been debated as either the product of previous stages of evolution or of binary interactions. We here report the discovery of two massive and magnetic white-dwarf members of young star clusters in the Gaia second data release (DR2) database, while a third massive and magnetic cluster white dwarf was already reported in a previous paper. These stars are most likely the product of single-star evolution and therefore challenge the merger scenario as the only way to produce magnetic white dwarfs. The progenitor masses of these stars are all above 5 solar masses, and there are only two other cluster white dwarfs whose distances have been unambiguously measured with Gaia and whose progenitors' masses fall in this range. This high incidence of magnetic white dwarfs indicates that intermediate-mass progenitors are more likely to produce magnetic remnants and that a fraction of magnetic white dwarfs forms from intermediate-mass stars.","lang":"eng"}],"date_updated":"2024-10-14T12:33:09Z","date_published":"2020-09-22T00:00:00Z","citation":{"ama":"Caiazzo I, Heyl J, Richer H, et al. Intermediate-mass stars become magnetic white dwarfs. <i>The Astrophysical Journal Letters</i>. 2020;901(1). doi:<a href=\"https://doi.org/10.3847/2041-8213/abb5f7\">10.3847/2041-8213/abb5f7</a>","ieee":"I. Caiazzo <i>et al.</i>, “Intermediate-mass stars become magnetic white dwarfs,” <i>The Astrophysical Journal Letters</i>, vol. 901, no. 1. American Astronomical Society, 2020.","ista":"Caiazzo I, Heyl J, Richer H, Cummings J, Fleury L, Hegarty J, Kalirai J, Kerr R, Thiele S, Tremblay P-E, Villanueva M. 2020. Intermediate-mass stars become magnetic white dwarfs. The Astrophysical Journal Letters. 901(1), L14.","chicago":"Caiazzo, Ilaria, Jeremy Heyl, Harvey Richer, Jeffrey Cummings, Leesa Fleury, James Hegarty, Jason Kalirai, et al. “Intermediate-Mass Stars Become Magnetic White Dwarfs.” <i>The Astrophysical Journal Letters</i>. American Astronomical Society, 2020. <a href=\"https://doi.org/10.3847/2041-8213/abb5f7\">https://doi.org/10.3847/2041-8213/abb5f7</a>.","short":"I. Caiazzo, J. Heyl, H. Richer, J. Cummings, L. Fleury, J. Hegarty, J. Kalirai, R. Kerr, S. Thiele, P.-E. Tremblay, M. Villanueva, The Astrophysical Journal Letters 901 (2020).","mla":"Caiazzo, Ilaria, et al. “Intermediate-Mass Stars Become Magnetic White Dwarfs.” <i>The Astrophysical Journal Letters</i>, vol. 901, no. 1, L14, American Astronomical Society, 2020, doi:<a href=\"https://doi.org/10.3847/2041-8213/abb5f7\">10.3847/2041-8213/abb5f7</a>.","apa":"Caiazzo, I., Heyl, J., Richer, H., Cummings, J., Fleury, L., Hegarty, J., … Villanueva, M. (2020). Intermediate-mass stars become magnetic white dwarfs. <i>The Astrophysical Journal Letters</i>. American Astronomical Society. <a href=\"https://doi.org/10.3847/2041-8213/abb5f7\">https://doi.org/10.3847/2041-8213/abb5f7</a>"},"language":[{"iso":"eng"}],"date_created":"2024-03-26T10:35:02Z","oa_version":"Preprint","article_number":"L14","type":"journal_article","issue":"1","oa":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Intermediate-mass stars become magnetic white dwarfs","scopus_import":"1","article_processing_charge":"No","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"year":"2020","extern":"1","intvolume":"       901","author":[{"orcid":"0000-0002-4770-5388","last_name":"Caiazzo","first_name":"Ilaria","id":"8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d","full_name":"Caiazzo, Ilaria"},{"first_name":"Jeremy","last_name":"Heyl","full_name":"Heyl, Jeremy"},{"last_name":"Richer","first_name":"Harvey","full_name":"Richer, Harvey"},{"last_name":"Cummings","first_name":"Jeffrey","full_name":"Cummings, Jeffrey"},{"last_name":"Fleury","first_name":"Leesa","full_name":"Fleury, Leesa"},{"last_name":"Hegarty","first_name":"James","full_name":"Hegarty, James"},{"full_name":"Kalirai, Jason","last_name":"Kalirai","first_name":"Jason"},{"first_name":"Ronan","last_name":"Kerr","full_name":"Kerr, Ronan"},{"first_name":"Sarah","last_name":"Thiele","full_name":"Thiele, Sarah"},{"last_name":"Tremblay","first_name":"Pier-Emmanuel","full_name":"Tremblay, Pier-Emmanuel"},{"full_name":"Villanueva, Michael","last_name":"Villanueva","first_name":"Michael"}],"article_type":"original"},{"oa":1,"date_created":"2024-03-26T10:36:20Z","oa_version":"Preprint","article_number":"114442Y","type":"conference","date_updated":"2024-04-08T06:58:50Z","_id":"15228","abstract":[{"lang":"eng","text":"We describe a new implementation of a broad-band soft X-ray polarimeter, substantially based on a previous design. This implementation, the Pioneer Soft X-ray Polarimeter (PiSoX) is a SmallSat, designed for NASA’s call for Astrophysics Pioneers, small missions that could be CubeSats, balloon experiments, or SmallSats. As in REDSoX, the grating arrangement is designed optimally for the purpose of polarimetry with broad-band focussing optics by matching the dispersion of the spectrometer channels to laterally graded multilayers (LGMLs). The system can achieve polarization modulation factors over 90%. For PiSoX, the optics are lightweight Si mirrors in a one-bounce parabolic configuration. High efficiency, blazed gratings from opposite sectors are oriented to disperse to a LGML forming a channel covering the wavelength range from 35 Å to 75 Å (165 - 350 eV). Upon satellite rotation, the intensities of the dispersed spectra, after reflection and polarizing by the LGMLs, give the three Stokes parameters needed to determine a source’s linear polarization fraction and orientation. The design can be extended to higher energies as LGMLs are developed further. We describe examples of the potential scientific return from instruments based on this design."}],"citation":{"ista":"Marshall HL, Heine S, Garner A, Gullikson E, Guenther M, Leitz C, Masterson R, Miller E, Zhang W, Boissay Malaquin R, Caiazzo I, Chakrabarty D, Davidson R, Gallo L, Heilmann RK, Heyl J, Kara E, Marscher A, Schulz N. 2020. A small satellite version of a soft x-ray polarimeter. Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray. Astronomical Telescopes + Instrumentation vol. 11444, 114442Y.","chicago":"Marshall, Herman L., Sarah Heine, Alan Garner, Eric Gullikson, Moritz Guenther, Christopher Leitz, Rebecca Masterson, et al. “A Small Satellite Version of a Soft X-Ray Polarimeter.” In <i>Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray</i>, Vol. 11444. SPIE, 2020. <a href=\"https://doi.org/10.1117/12.2562811\">https://doi.org/10.1117/12.2562811</a>.","ama":"Marshall HL, Heine S, Garner A, et al. A small satellite version of a soft x-ray polarimeter. In: <i>Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray</i>. Vol 11444. SPIE; 2020. doi:<a href=\"https://doi.org/10.1117/12.2562811\">10.1117/12.2562811</a>","ieee":"H. L. Marshall <i>et al.</i>, “A small satellite version of a soft x-ray polarimeter,” in <i>Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray</i>, Virtual, 2020, vol. 11444.","short":"H.L. Marshall, S. Heine, A. Garner, E. Gullikson, M. Guenther, C. Leitz, R. Masterson, E. Miller, W. Zhang, R. Boissay Malaquin, I. Caiazzo, D. Chakrabarty, R. Davidson, L. Gallo, R.K. Heilmann, J. Heyl, E. Kara, A. Marscher, N. Schulz, in:, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, SPIE, 2020.","mla":"Marshall, Herman L., et al. “A Small Satellite Version of a Soft X-Ray Polarimeter.” <i>Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray</i>, vol. 11444, 114442Y, SPIE, 2020, doi:<a href=\"https://doi.org/10.1117/12.2562811\">10.1117/12.2562811</a>.","apa":"Marshall, H. L., Heine, S., Garner, A., Gullikson, E., Guenther, M., Leitz, C., … Schulz, N. (2020). A small satellite version of a soft x-ray polarimeter. In <i>Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray</i> (Vol. 11444). Virtual: SPIE. <a href=\"https://doi.org/10.1117/12.2562811\">https://doi.org/10.1117/12.2562811</a>"},"date_published":"2020-12-13T00:00:00Z","language":[{"iso":"eng"}],"intvolume":"     11444","author":[{"first_name":"Herman L.","last_name":"Marshall","full_name":"Marshall, Herman L."},{"last_name":"Heine","first_name":"Sarah","full_name":"Heine, Sarah"},{"full_name":"Garner, Alan","first_name":"Alan","last_name":"Garner"},{"last_name":"Gullikson","first_name":"Eric","full_name":"Gullikson, Eric"},{"full_name":"Guenther, Moritz","first_name":"Moritz","last_name":"Guenther"},{"last_name":"Leitz","first_name":"Christopher","full_name":"Leitz, Christopher"},{"last_name":"Masterson","first_name":"Rebecca","full_name":"Masterson, Rebecca"},{"full_name":"Miller, Eric","last_name":"Miller","first_name":"Eric"},{"full_name":"Zhang, William","first_name":"William","last_name":"Zhang"},{"full_name":"Boissay Malaquin, Rozenn","last_name":"Boissay Malaquin","first_name":"Rozenn"},{"id":"8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d","full_name":"Caiazzo, Ilaria","orcid":"0000-0002-4770-5388","last_name":"Caiazzo","first_name":"Ilaria"},{"first_name":"Deepto","last_name":"Chakrabarty","full_name":"Chakrabarty, Deepto"},{"last_name":"Davidson","first_name":"Rosemary","full_name":"Davidson, Rosemary"},{"first_name":"Luigi","last_name":"Gallo","full_name":"Gallo, Luigi"},{"first_name":"Ralf K.","last_name":"Heilmann","full_name":"Heilmann, Ralf K."},{"first_name":"Jeremy","last_name":"Heyl","full_name":"Heyl, Jeremy"},{"last_name":"Kara","first_name":"Erin","full_name":"Kara, Erin"},{"last_name":"Marscher","first_name":"Alan","full_name":"Marscher, Alan"},{"full_name":"Schulz, Norbert","first_name":"Norbert","last_name":"Schulz"}],"article_processing_charge":"No","year":"2020","extern":"1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"A small satellite version of a soft x-ray polarimeter","conference":{"start_date":"2020-12-14","location":"Virtual","end_date":"2020-12-18","name":"Astronomical Telescopes + Instrumentation"},"scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2012.02829"}],"doi":"10.1117/12.2562811","month":"12","quality_controlled":"1","external_id":{"arxiv":["2012.02829"]},"status":"public","day":"13","publication_identifier":{"eissn":["1996-756X"],"isbn":["978-151063675-0"]},"arxiv":1,"volume":11444,"publication":"Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray","publication_status":"published","publisher":"SPIE"},{"scopus_import":"1","publication_identifier":{"isbn":["978-151063675-0"],"eissn":["1996-756X"]},"conference":{"name":"Astronomical Telescopes + Instrumentation","end_date":"2020-12-18","start_date":"2020-12-14","location":"Virtual"},"day":"13","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"The Colibrì high-resolution x-ray telescope","status":"public","publisher":"SPIE","publication_status":"published","publication":"Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray","volume":11444,"intvolume":"     11444","author":[{"last_name":"Heyl","first_name":"Jeremy","full_name":"Heyl, Jeremy"},{"first_name":"Ilaria","orcid":"0000-0002-4770-5388","last_name":"Caiazzo","full_name":"Caiazzo, Ilaria","id":"8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d"},{"full_name":"Gallagher, Sarah","first_name":"Sarah","last_name":"Gallagher"},{"full_name":"Hoffman, Kelsey","first_name":"Kelsey","last_name":"Hoffman"},{"first_name":"Samar","last_name":"Safi-Harb","full_name":"Safi-Harb, Samar"}],"quality_controlled":"1","extern":"1","year":"2020","article_processing_charge":"No","doi":"10.1117/12.2562625","month":"12","language":[{"iso":"eng"}],"citation":{"short":"J. Heyl, I. Caiazzo, S. Gallagher, K. Hoffman, S. Safi-Harb, in:, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, SPIE, 2020.","mla":"Heyl, Jeremy, et al. “The Colibrì High-Resolution x-Ray Telescope.” <i>Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray</i>, vol. 11444, 114442A, SPIE, 2020, doi:<a href=\"https://doi.org/10.1117/12.2562625\">10.1117/12.2562625</a>.","apa":"Heyl, J., Caiazzo, I., Gallagher, S., Hoffman, K., &#38; Safi-Harb, S. (2020). The Colibrì high-resolution x-ray telescope. In <i>Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray</i> (Vol. 11444). Virtual: SPIE. <a href=\"https://doi.org/10.1117/12.2562625\">https://doi.org/10.1117/12.2562625</a>","ista":"Heyl J, Caiazzo I, Gallagher S, Hoffman K, Safi-Harb S. 2020. The Colibrì high-resolution x-ray telescope. Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray. Astronomical Telescopes + Instrumentation vol. 11444, 114442A.","chicago":"Heyl, Jeremy, Ilaria Caiazzo, Sarah Gallagher, Kelsey Hoffman, and Samar Safi-Harb. “The Colibrì High-Resolution x-Ray Telescope.” In <i>Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray</i>, Vol. 11444. SPIE, 2020. <a href=\"https://doi.org/10.1117/12.2562625\">https://doi.org/10.1117/12.2562625</a>.","ama":"Heyl J, Caiazzo I, Gallagher S, Hoffman K, Safi-Harb S. The Colibrì high-resolution x-ray telescope. In: <i>Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray</i>. Vol 11444. SPIE; 2020. doi:<a href=\"https://doi.org/10.1117/12.2562625\">10.1117/12.2562625</a>","ieee":"J. Heyl, I. Caiazzo, S. Gallagher, K. Hoffman, and S. Safi-Harb, “The Colibrì high-resolution x-ray telescope,” in <i>Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray</i>, Virtual, 2020, vol. 11444."},"date_published":"2020-12-13T00:00:00Z","_id":"15229","abstract":[{"text":"We propose a high-time-resolution, high-spectral-resolution X-ray telescope that uses transition-edge sensors (TES) as detectors and collector optics to direct the X-rays onto the focal plane, providing a large effective area in a small satellite. The key science driver of the instrument is to study neutron stars and accreting black holes. The proposed instrument is built upon two technologies that are already at high TRL: TES X-ray detectors and collector optics.","lang":"eng"}],"date_updated":"2024-04-08T06:59:43Z","type":"conference","article_number":"114442A","oa_version":"None","date_created":"2024-03-26T10:36:40Z"},{"type":"journal_article","corr_author":"1","oa_version":"None","date_created":"2024-04-03T09:40:11Z","issue":"S2","month":"08","language":[{"iso":"eng"}],"page":"2518-2519","department":[{"_id":"FlSc"},{"_id":"EM-Fac"}],"date_published":"2020-08-01T00:00:00Z","citation":{"chicago":"Fäßler, Florian, Georgi A Dimchev, Victor-Valentin Hodirnau, Bettina Zens, Christoph Möhl, Frank Bradke, and Florian KM Schur. “Cryo-Electron Tomography Workflows for Quantitative Analysis of Actin Networks Involved in Cell Migration.” <i>Microscopy and Microanalysis</i>. Oxford University Press, 2020. <a href=\"https://doi.org/10.1017/s1431927620021881\">https://doi.org/10.1017/s1431927620021881</a>.","ista":"Fäßler F, Dimchev GA, Hodirnau V-V, Zens B, Möhl C, Bradke F, Schur FK. 2020. Cryo-electron tomography workflows for quantitative analysis of actin networks involved in cell migration. Microscopy and Microanalysis. 26(S2), 2518–2519.","ama":"Fäßler F, Dimchev GA, Hodirnau V-V, et al. Cryo-electron tomography workflows for quantitative analysis of actin networks involved in cell migration. <i>Microscopy and Microanalysis</i>. 2020;26(S2):2518-2519. doi:<a href=\"https://doi.org/10.1017/s1431927620021881\">10.1017/s1431927620021881</a>","ieee":"F. Fäßler <i>et al.</i>, “Cryo-electron tomography workflows for quantitative analysis of actin networks involved in cell migration,” <i>Microscopy and Microanalysis</i>, vol. 26, no. S2. Oxford University Press, pp. 2518–2519, 2020.","apa":"Fäßler, F., Dimchev, G. A., Hodirnau, V.-V., Zens, B., Möhl, C., Bradke, F., &#38; Schur, F. K. (2020). Cryo-electron tomography workflows for quantitative analysis of actin networks involved in cell migration. <i>Microscopy and Microanalysis</i>. Oxford University Press. <a href=\"https://doi.org/10.1017/s1431927620021881\">https://doi.org/10.1017/s1431927620021881</a>","mla":"Fäßler, Florian, et al. “Cryo-Electron Tomography Workflows for Quantitative Analysis of Actin Networks Involved in Cell Migration.” <i>Microscopy and Microanalysis</i>, vol. 26, no. S2, Oxford University Press, 2020, pp. 2518–19, doi:<a href=\"https://doi.org/10.1017/s1431927620021881\">10.1017/s1431927620021881</a>.","short":"F. Fäßler, G.A. Dimchev, V.-V. Hodirnau, B. Zens, C. Möhl, F. Bradke, F.K. Schur, Microscopy and Microanalysis 26 (2020) 2518–2519."},"_id":"15286","date_updated":"2024-10-09T21:08:43Z","doi":"10.1017/s1431927620021881","keyword":["Instrumentation"],"year":"2020","article_processing_charge":"No","article_type":"original","intvolume":"        26","author":[{"full_name":"Fäßler, Florian","id":"404F5528-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-7149-769X","last_name":"Fäßler","first_name":"Florian"},{"first_name":"Georgi A","last_name":"Dimchev","orcid":"0000-0001-8370-6161","id":"38C393BE-F248-11E8-B48F-1D18A9856A87","full_name":"Dimchev, Georgi A"},{"full_name":"Hodirnau, Victor-Valentin","id":"3661B498-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-3904-947X","last_name":"Hodirnau","first_name":"Victor-Valentin"},{"first_name":"Bettina","last_name":"Zens","orcid":"0000-0002-9561-1239","id":"45FD126C-F248-11E8-B48F-1D18A9856A87","full_name":"Zens, Bettina"},{"full_name":"Möhl, Christoph","last_name":"Möhl","first_name":"Christoph"},{"last_name":"Bradke","first_name":"Frank","full_name":"Bradke, Frank"},{"first_name":"Florian KM","orcid":"0000-0003-4790-8078","last_name":"Schur","id":"48AD8942-F248-11E8-B48F-1D18A9856A87","full_name":"Schur, Florian KM"}],"quality_controlled":"1","publisher":"Oxford University Press","publication_status":"published","publication":"Microscopy and Microanalysis","volume":26,"publication_identifier":{"issn":["1431-9276"],"eissn":["1435-8115"]},"day":"01","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Cryo-electron tomography workflows for quantitative analysis of actin networks involved in cell migration","status":"public"},{"language":[{"iso":"eng"}],"date_published":"2020-10-30T00:00:00Z","department":[{"_id":"ElKo"}],"page":"1751–1767","citation":{"apa":"Kokoris Kogias, E., Malkhi, D., &#38; Spiegelman, A. (2020). Asynchronous distributed key generation for computationally-secure randomness, consensus, and threshold signatures. In <i>Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security</i> (pp. 1751–1767). Virtual, United States: Association for Computing Machinery. <a href=\"https://doi.org/10.1145/3372297.3423364\">https://doi.org/10.1145/3372297.3423364</a>","short":"E. Kokoris Kogias, D. Malkhi, A. Spiegelman, in:, Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security, Association for Computing Machinery, 2020, pp. 1751–1767.","mla":"Kokoris Kogias, Eleftherios, et al. “Asynchronous Distributed Key Generation for Computationally-Secure Randomness, Consensus, and Threshold Signatures.” <i>Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security</i>, Association for Computing Machinery, 2020, pp. 1751–1767, doi:<a href=\"https://doi.org/10.1145/3372297.3423364\">10.1145/3372297.3423364</a>.","ama":"Kokoris Kogias E, Malkhi D, Spiegelman A. Asynchronous distributed key generation for computationally-secure randomness, consensus, and threshold signatures. In: <i>Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security</i>. Association for Computing Machinery; 2020:1751–1767. doi:<a href=\"https://doi.org/10.1145/3372297.3423364\">10.1145/3372297.3423364</a>","ieee":"E. Kokoris Kogias, D. Malkhi, and A. Spiegelman, “Asynchronous distributed key generation for computationally-secure randomness, consensus, and threshold signatures,” in <i>Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security</i>, Virtual, United States, 2020, pp. 1751–1767.","chicago":"Kokoris Kogias, Eleftherios, Dahlia Malkhi, and Alexander Spiegelman. “Asynchronous Distributed Key Generation for Computationally-Secure Randomness, Consensus, and Threshold Signatures.” In <i>Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security</i>, 1751–1767. Association for Computing Machinery, 2020. <a href=\"https://doi.org/10.1145/3372297.3423364\">https://doi.org/10.1145/3372297.3423364</a>.","ista":"Kokoris Kogias E, Malkhi D, Spiegelman A. 2020. Asynchronous distributed key generation for computationally-secure randomness, consensus, and threshold signatures. Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security. CCS: Conference on Computer and Communications Security, 1751–1767."},"date_updated":"2025-07-10T11:49:52Z","_id":"10556","abstract":[{"text":"In this paper, we present the first Asynchronous Distributed Key Generation (ADKG) algorithm which is also the first distributed key generation algorithm that can generate cryptographic keys with a dual (f,2f+1)-threshold (where f is the number of faulty parties). As a result, using our ADKG we remove the trusted setup assumption that the most scalable consensus algorithms make. In order to create a DKG with a dual (f,2f+1)- threshold we first answer in the affirmative the open question posed by Cachin et al. [7] on how to create an Asynchronous Verifiable Secret Sharing (AVSS) protocol with a reconstruction threshold of f+1<k łe 2f+1, which is of independent interest. Our High-threshold-AVSS (HAVSS) uses an asymmetric bivariate polynomial to encode the secret. This enables the reconstruction of the secret only if a set of k nodes contribute while allowing an honest node that did not participate in the sharing phase to recover his share with the help of f+1 honest parties. Once we have HAVSS we can use it to bootstrap scalable partially synchronous consensus protocols, but the question on how to get a DKG in asynchrony remains as we need a way to produce common randomness. The solution comes from a novel Eventually Perfect Common Coin (EPCC) abstraction that enables the generation of a common coin from n concurrent HAVSS invocations. EPCC's key property is that it is eventually reliable, as it might fail to agree at most f times (even if invoked a polynomial number of times). Using EPCC we implement an Eventually Efficient Asynchronous Binary Agreement (EEABA) which is optimal when the EPCC agrees and protects safety when EPCC fails. Finally, using EEABA we construct the first ADKG which has the same overhead and expected runtime as the best partially-synchronous DKG (O(n4) words, O(f) rounds). As a corollary of our ADKG, we can also create the first Validated Asynchronous Byzantine Agreement (VABA) that does not need a trusted dealer to setup threshold signatures of degree n-f. Our VABA has an overhead of expected O(n2) words and O(1) time per instance, after an initial O(n4) words and O(f) time bootstrap via ADKG.","lang":"eng"}],"oa":1,"isi":1,"type":"conference","date_created":"2021-12-16T13:23:27Z","oa_version":"Preprint","scopus_import":"1","conference":{"end_date":"2020-11-13","name":"CCS: Conference on Computer and Communications Security","start_date":"2020-11-09","location":"Virtual, United States"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Asynchronous distributed key generation for computationally-secure randomness, consensus, and threshold signatures","author":[{"last_name":"Kokoris Kogias","first_name":"Eleftherios","full_name":"Kokoris Kogias, Eleftherios","id":"f5983044-d7ef-11ea-ac6d-fd1430a26d30"},{"first_name":"Dahlia","last_name":"Malkhi","full_name":"Malkhi, Dahlia"},{"first_name":"Alexander","last_name":"Spiegelman","full_name":"Spiegelman, Alexander"}],"year":"2020","article_processing_charge":"No","doi":"10.1145/3372297.3423364","month":"10","main_file_link":[{"open_access":"1","url":"https://eprint.iacr.org/2019/1015"}],"publication_identifier":{"isbn":["978-1-4503-7089-9"]},"day":"30","status":"public","publisher":"Association for Computing Machinery","publication_status":"published","publication":"Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security","external_id":{"isi":["000768470400104"]},"acknowledgement":"We would like to thank Ittai Abraham for the discussions and guidance during the initial conception of the project, especially for HAVSS. Furthermore, we would like to thank the anonymous reviewers for pointing out the relevance of this work to MPC protocols.","quality_controlled":"1"},{"month":"03","date_updated":"2021-12-21T10:04:50Z","_id":"10557","abstract":[{"text":"Data storage and retrieval systems, methods, and computer-readable media utilize a cryptographically verifiable data structure that facilitates verification of a transaction in a decentralized peer-to-peer environment using multi-hop backwards and forwards links. Backward links are cryptographic hashes of past records. Forward links are cryptographic signatures of future records that are added retroactively to records once the target block has been appended to the data structure.","lang":"eng"}],"department":[{"_id":"ElKo"}],"citation":{"apa":"Ford, B., Gasse, L., Kokoris Kogias, E., &#38; Jovanovic, P. (2020). Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods.","mla":"Ford, Bryan, et al. <i>Cryptographically Verifiable Data Structure Having Multi-Hop Forward and Backwards Links and Associated Systems and Methods</i>. 2020.","short":"B. Ford, L. Gasse, E. Kokoris Kogias, P. Jovanovic, (2020).","ama":"Ford B, Gasse L, Kokoris Kogias E, Jovanovic P. Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods. 2020.","ieee":"B. Ford, L. Gasse, E. Kokoris Kogias, and P. Jovanovic, “Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods.” 2020.","chicago":"Ford, Bryan, Linus Gasse, Eleftherios Kokoris Kogias, and Philipp Jovanovic. “Cryptographically Verifiable Data Structure Having Multi-Hop Forward and Backwards Links and Associated Systems and Methods,” 2020.","ista":"Ford B, Gasse L, Kokoris Kogias E, Jovanovic P. 2020. Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods."},"date_published":"2020-03-03T00:00:00Z","application_date":"2017-06-09","oa":1,"ipn":"10581613","main_file_link":[{"open_access":"1","url":"https://patents.google.com/patent/US10581613B2/en"}],"publication_date":"2020-03-03","applicant":["Ecole Polytechnique Federale de Lausanne"],"type":"patent","oa_version":"Published Version","date_created":"2021-12-16T13:28:59Z","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","title":"Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods","status":"public","day":"03","ipc":" H04L9/3247 ; G06Q20/29 ; G06Q20/382 ; H04L9/3236","related_material":{"link":[{"url":"https://patents.google.com/patent/US20180359096A1/en","relation":"earlier_version"}]},"author":[{"first_name":"Bryan","last_name":"Ford","full_name":"Ford, Bryan"},{"first_name":"Linus","last_name":"Gasse","full_name":"Gasse, Linus"},{"last_name":"Kokoris Kogias","first_name":"Eleftherios","full_name":"Kokoris Kogias, Eleftherios","id":"f5983044-d7ef-11ea-ac6d-fd1430a26d30"},{"full_name":"Jovanovic, Philipp","first_name":"Philipp","last_name":"Jovanovic"}],"extern":"1","article_processing_charge":"No","year":"2020"},{"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2004.11353"}],"month":"11","doi":"10.1038/s41586-020-2963-8","quality_controlled":"1","external_id":{"pmid":["33230333"],"arxiv":["2004.11353"]},"acknowledgement":"We acknowledge discussions with J. Checkelsky, S. Chen, C. Dean, M. Yankowitz, D. Reilly, I. Sodemann and M. Zaletel. Work at UCSB was primarily supported by the ARO under MURI W911NF-16-1-0361. Measurements of twisted bilayer graphene (Extended Data Fig. 8) and measurements at elevated temperatures (Extended Data Fig. 3) were supported by a SEED grant and made use of shared facilities of the UCSB MRSEC (NSF DMR 1720256), a member of the Materials Research Facilities Network (www.mrfn.org). A.F.Y. acknowledges the support of the David and Lucille Packard Foundation under award 2016-65145. A.H.M. and J.Z. were supported by the National Science Foundation through the Center for Dynamics and Control of Materials, an NSF MRSEC under Cooperative Agreement number DMR-1720595, and by the Welch Foundation under grant TBF1473. C.L.T. acknowledges support from the Hertz Foundation and from the National Science Foundation Graduate Research Fellowship Program under grant 1650114. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan, Grant Number JPMXP0112101001, JSPS KAKENHI grant numbers JP20H00354 and the CREST(JPMJCR15F3), JST.","publication":"Nature","volume":588,"publisher":"Springer Nature","publication_status":"published","day":"23","pmid":1,"status":"public","arxiv":1,"publication_identifier":{"eissn":["1476-4687"],"issn":["0028-0836"]},"oa_version":"Preprint","date_created":"2022-01-13T14:12:17Z","type":"journal_article","issue":"7836","oa":1,"date_published":"2020-11-23T00:00:00Z","citation":{"chicago":"Polshyn, Hryhoriy, J. Zhu, M. A. Kumar, Y. Zhang, F. Yang, C. L. Tschirhart, M. Serlin, et al. “Electrical Switching of Magnetic Order in an Orbital Chern Insulator.” <i>Nature</i>. Springer Nature, 2020. <a href=\"https://doi.org/10.1038/s41586-020-2963-8\">https://doi.org/10.1038/s41586-020-2963-8</a>.","ista":"Polshyn H, Zhu J, Kumar MA, Zhang Y, Yang F, Tschirhart CL, Serlin M, Watanabe K, Taniguchi T, MacDonald AH, Young AF. 2020. Electrical switching of magnetic order in an orbital Chern insulator. Nature. 588(7836), 66–70.","ama":"Polshyn H, Zhu J, Kumar MA, et al. Electrical switching of magnetic order in an orbital Chern insulator. <i>Nature</i>. 2020;588(7836):66-70. doi:<a href=\"https://doi.org/10.1038/s41586-020-2963-8\">10.1038/s41586-020-2963-8</a>","ieee":"H. Polshyn <i>et al.</i>, “Electrical switching of magnetic order in an orbital Chern insulator,” <i>Nature</i>, vol. 588, no. 7836. Springer Nature, pp. 66–70, 2020.","apa":"Polshyn, H., Zhu, J., Kumar, M. A., Zhang, Y., Yang, F., Tschirhart, C. L., … Young, A. F. (2020). Electrical switching of magnetic order in an orbital Chern insulator. <i>Nature</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41586-020-2963-8\">https://doi.org/10.1038/s41586-020-2963-8</a>","short":"H. Polshyn, J. Zhu, M.A. Kumar, Y. Zhang, F. Yang, C.L. Tschirhart, M. Serlin, K. Watanabe, T. Taniguchi, A.H. MacDonald, A.F. Young, Nature 588 (2020) 66–70.","mla":"Polshyn, Hryhoriy, et al. “Electrical Switching of Magnetic Order in an Orbital Chern Insulator.” <i>Nature</i>, vol. 588, no. 7836, Springer Nature, 2020, pp. 66–70, doi:<a href=\"https://doi.org/10.1038/s41586-020-2963-8\">10.1038/s41586-020-2963-8</a>."},"page":"66-70","_id":"10618","date_updated":"2022-01-13T14:21:04Z","abstract":[{"text":"Magnetism typically arises from the joint effect of Fermi statistics and repulsive Coulomb interactions, which favours ground states with non-zero electron spin. As a result, controlling spin magnetism with electric fields—a longstanding technological goal in spintronics and multiferroics1,2—can be achieved only indirectly. Here we experimentally demonstrate direct electric-field control of magnetic states in an orbital Chern insulator3,4,5,6, a magnetic system in which non-trivial band topology favours long-range order of orbital angular momentum but the spins are thought to remain disordered7,8,9,10,11,12,13,14. We use van der Waals heterostructures consisting of a graphene monolayer rotationally faulted with respect to a Bernal-stacked bilayer to realize narrow and topologically non-trivial valley-projected moiré minibands15,16,17. At fillings of one and three electrons per moiré unit cell within these bands, we observe quantized anomalous Hall effects18 with transverse resistance approximately equal to h/2e2 (where h is Planck’s constant and e is the charge on the electron), which is indicative of spontaneous polarization of the system into a single-valley-projected band with a Chern number equal to two. At a filling of three electrons per moiré unit cell, we find that the sign of the quantum anomalous Hall effect can be reversed via field-effect control of the chemical potential; moreover, this transition is hysteretic, which we use to demonstrate non-volatile electric-field-induced reversal of the magnetic state. A theoretical analysis19 indicates that the effect arises from the topological edge states, which drive a change in sign of the magnetization and thus a reversal in the favoured magnetic state. Voltage control of magnetic states can be used to electrically pattern non-volatile magnetic-domain structures hosting chiral edge states, with applications ranging from reconfigurable microwave circuit elements to ultralow-power magnetic memories.","lang":"eng"}],"language":[{"iso":"eng"}],"year":"2020","keyword":["multidisciplinary"],"article_processing_charge":"No","extern":"1","author":[{"full_name":"Polshyn, Hryhoriy","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48","orcid":"0000-0001-8223-8896","last_name":"Polshyn","first_name":"Hryhoriy"},{"last_name":"Zhu","first_name":"J.","full_name":"Zhu, J."},{"last_name":"Kumar","first_name":"M. A.","full_name":"Kumar, M. A."},{"first_name":"Y.","last_name":"Zhang","full_name":"Zhang, Y."},{"last_name":"Yang","first_name":"F.","full_name":"Yang, F."},{"first_name":"C. L.","last_name":"Tschirhart","full_name":"Tschirhart, C. L."},{"full_name":"Serlin, M.","first_name":"M.","last_name":"Serlin"},{"full_name":"Watanabe, K.","first_name":"K.","last_name":"Watanabe"},{"last_name":"Taniguchi","first_name":"T.","full_name":"Taniguchi, T."},{"last_name":"MacDonald","first_name":"A. H.","full_name":"MacDonald, A. H."},{"last_name":"Young","first_name":"A. F.","full_name":"Young, A. F."}],"intvolume":"       588","article_type":"original","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","title":"Electrical switching of magnetic order in an orbital Chern insulator","scopus_import":"1"},{"main_file_link":[{"url":"https://arxiv.org/abs/2010.00584","open_access":"1"}],"oa":1,"date_created":"2022-01-20T10:55:36Z","oa_version":"Preprint","type":"preprint","citation":{"apa":"Alexandradinata, A., Armitage, N. P., Baydin, A., Bi, W., Cao, Y., Changlani, H. J., … Zong, A. (n.d.). The future of the correlated electron problem. <i>arXiv</i>.","short":"A. Alexandradinata, N.P. Armitage, A. Baydin, W. Bi, Y. Cao, H.J. Changlani, E. Chertkov, E.H. da Silva Neto, L. Delacretaz, I. El Baggari, G.M. Ferguson, W.J. Gannon, S.A.A. Ghorashi, B.H. Goodge, O. Goulko, G. Grissonnache, A. Hallas, I.M. Hayes, Y. He, E.W. Huang, A. Kogar, D. Kumah, J.Y. Lee, A. Legros, F. Mahmood, Y. Maximenko, N. Pellatz, H. Polshyn, T. Sarkar, A. Scheie, K.L. Seyler, Z. Shi, B. Skinner, L. Steinke, K. Thirunavukkuarasu, T.V. Trevisan, M. Vogl, P.A. Volkov, Y. Wang, Y. Wang, D. Wei, K. Wei, S. Yang, X. Zhang, Y.-H. Zhang, L. Zhao, A. Zong, ArXiv (n.d.).","mla":"Alexandradinata, A., et al. “The Future of the Correlated Electron Problem.” <i>ArXiv</i>.","ieee":"A. Alexandradinata <i>et al.</i>, “The future of the correlated electron problem,” <i>arXiv</i>. .","ama":"Alexandradinata A, Armitage NP, Baydin A, et al. The future of the correlated electron problem. <i>arXiv</i>.","chicago":"Alexandradinata, A, N.P. Armitage, Andrey Baydin, Wenli Bi, Yue Cao, Hitesh J. Changlani, Eli Chertkov, et al. “The Future of the Correlated Electron Problem.” <i>ArXiv</i>, n.d.","ista":"Alexandradinata A, Armitage NP, Baydin A, Bi W, Cao Y, Changlani HJ, Chertkov E, da Silva Neto EH, Delacretaz L, El Baggari I, Ferguson GM, Gannon WJ, Ghorashi SAA, Goodge BH, Goulko O, Grissonnache G, Hallas A, Hayes IM, He Y, Huang EW, Kogar A, Kumah D, Lee JY, Legros A, Mahmood F, Maximenko Y, Pellatz N, Polshyn H, Sarkar T, Scheie A, Seyler KL, Shi Z, Skinner B, Steinke L, Thirunavukkuarasu K, Trevisan TV, Vogl M, Volkov PA, Wang Y, Wang Y, Wei D, Wei K, Yang S, Zhang X, Zhang Y-H, Zhao L, Zong A. The future of the correlated electron problem. arXiv, ."},"date_published":"2020-10-01T00:00:00Z","page":"55","date_updated":"2022-01-24T08:05:51Z","_id":"10650","abstract":[{"lang":"eng","text":"The understanding of material systems with strong electron-electron interactions is the central problem in modern condensed matter physics. Despite this, the essential physics of many of these materials is still not understood and we have no overall perspective on their properties. Moreover, we have very little ability to make predictions in this class of systems. In this manuscript we share our personal views of what the major open problems are in correlated electron systems and we discuss some possible routes to make progress in this rich and fascinating field. This manuscript is the result of the vigorous discussions and deliberations that took place at Johns Hopkins University during a three-day workshop January 27, 28, and 29, 2020 that brought together six senior scientists and 46 more junior scientists. Our hope, is that the topics we have presented will provide inspiration for others working in this field and motivation for the idea that significant progress can be made on very hard problems if we focus our collective energies."}],"month":"10","language":[{"iso":"eng"}],"author":[{"last_name":"Alexandradinata","first_name":"A","full_name":"Alexandradinata, A"},{"first_name":"N.P.","last_name":"Armitage","full_name":"Armitage, N.P."},{"full_name":"Baydin, Andrey","last_name":"Baydin","first_name":"Andrey"},{"last_name":"Bi","first_name":"Wenli","full_name":"Bi, Wenli"},{"full_name":"Cao, Yue","last_name":"Cao","first_name":"Yue"},{"last_name":"Changlani","first_name":"Hitesh J.","full_name":"Changlani, Hitesh J."},{"last_name":"Chertkov","first_name":"Eli","full_name":"Chertkov, Eli"},{"last_name":"da Silva Neto","first_name":"Eduardo H.","full_name":"da Silva Neto, Eduardo H."},{"last_name":"Delacretaz","first_name":"Luca","full_name":"Delacretaz, Luca"},{"full_name":"El Baggari, Ismail","first_name":"Ismail","last_name":"El Baggari"},{"first_name":"G.M.","last_name":"Ferguson","full_name":"Ferguson, G.M."},{"last_name":"Gannon","first_name":"William J.","full_name":"Gannon, William J."},{"last_name":"Ghorashi","first_name":"Sayed Ali Akbar","full_name":"Ghorashi, Sayed Ali Akbar"},{"last_name":"Goodge","first_name":"Berit H.","full_name":"Goodge, Berit H."},{"first_name":"Olga","last_name":"Goulko","full_name":"Goulko, Olga"},{"full_name":"Grissonnache, G.","first_name":"G.","last_name":"Grissonnache"},{"full_name":"Hallas, Alannah","last_name":"Hallas","first_name":"Alannah"},{"last_name":"Hayes","first_name":"Ian M.","full_name":"Hayes, Ian M."},{"full_name":"He, Yu","first_name":"Yu","last_name":"He"},{"first_name":"Edwin W.","last_name":"Huang","full_name":"Huang, Edwin W."},{"last_name":"Kogar","first_name":"Anshu","full_name":"Kogar, Anshu"},{"last_name":"Kumah","first_name":"Divine","full_name":"Kumah, Divine"},{"full_name":"Lee, Jong Yeon","first_name":"Jong Yeon","last_name":"Lee"},{"full_name":"Legros, A.","last_name":"Legros","first_name":"A."},{"full_name":"Mahmood, Fahad","last_name":"Mahmood","first_name":"Fahad"},{"last_name":"Maximenko","first_name":"Yulia","full_name":"Maximenko, Yulia"},{"full_name":"Pellatz, Nick","last_name":"Pellatz","first_name":"Nick"},{"id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48","full_name":"Polshyn, Hryhoriy","orcid":"0000-0001-8223-8896","last_name":"Polshyn","first_name":"Hryhoriy"},{"full_name":"Sarkar, Tarapada","first_name":"Tarapada","last_name":"Sarkar"},{"full_name":"Scheie, Allen","first_name":"Allen","last_name":"Scheie"},{"full_name":"Seyler, Kyle L.","first_name":"Kyle L.","last_name":"Seyler"},{"last_name":"Shi","first_name":"Zhenzhong","full_name":"Shi, Zhenzhong"},{"full_name":"Skinner, Brian","last_name":"Skinner","first_name":"Brian"},{"last_name":"Steinke","first_name":"Lucia","full_name":"Steinke, Lucia"},{"last_name":"Thirunavukkuarasu","first_name":"K.","full_name":"Thirunavukkuarasu, K."},{"first_name":"Thaís Victa","last_name":"Trevisan","full_name":"Trevisan, Thaís Victa"},{"first_name":"Michael","last_name":"Vogl","full_name":"Vogl, Michael"},{"full_name":"Volkov, Pavel A.","first_name":"Pavel A.","last_name":"Volkov"},{"first_name":"Yao","last_name":"Wang","full_name":"Wang, Yao"},{"full_name":"Wang, Yishu","first_name":"Yishu","last_name":"Wang"},{"full_name":"Wei, Di","last_name":"Wei","first_name":"Di"},{"first_name":"Kaya","last_name":"Wei","full_name":"Wei, Kaya"},{"first_name":"Shuolong","last_name":"Yang","full_name":"Yang, Shuolong"},{"first_name":"Xian","last_name":"Zhang","full_name":"Zhang, Xian"},{"first_name":"Ya-Hui","last_name":"Zhang","full_name":"Zhang, Ya-Hui"},{"last_name":"Zhao","first_name":"Liuyan","full_name":"Zhao, Liuyan"},{"full_name":"Zong, Alfred","last_name":"Zong","first_name":"Alfred"}],"external_id":{"arxiv":["2010.00584"]},"acknowledgement":"We thank NSF CMP program for suggestions regarding the topic and general structure of the workshop. This project was supported by the NSF DMR-2002329 and The Gordon and Betty Moore Foundation (GBMF) EPiQS initiative. We would like to sincerely thank A. Kapitulnik, A. J. Leggett, M.B. Maple, T.M. McQueen, M. Norman, P. S. Riseborough, and G. A. Sawatzky for their lectures at the workshop and advice on the writing of this manuscript. We would also like to thank G. Blumberg, C. Broholm, S. Crooker, N. Drichko, and A. Patel for helpful consultation on topics discussed\r\nherein. A number of individuals also had independent support: (AA, EH; GBMF-4305), (IMH; GBMF-9071), (HJC; NHMFL is supported by the NSF DMR-1644779 and the state of Florida), (YH, AZ; Miller Institute for Basic Research in Science), (YC; US DOE-BES DEAC02-06CH11357), (AS; Spallation Neutron Source, a DOE Office of Science User Facility operated by ORNL), (SAAG; ARO-W911NF-18-1-0290, NSF DMR-1455233), (YW; DOE-BES DE-SC0019331, GBMF-4532).","year":"2020","article_processing_charge":"No","extern":"1","day":"01","status":"public","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","title":"The future of the correlated electron problem","arxiv":1,"publication":"arXiv","publication_status":"submitted"},{"oa":1,"oa_version":"Published Version","date_created":"2022-01-25T15:50:00Z","type":"conference","date_updated":"2025-04-15T06:25:56Z","_id":"10672","abstract":[{"text":"The family of feedback alignment (FA) algorithms aims to provide a more biologically motivated alternative to backpropagation (BP), by substituting the computations that are unrealistic to be implemented in physical brains. While FA algorithms have been shown to work well in practice, there is a lack of rigorous theory proofing their learning capabilities. Here we introduce the first feedback alignment algorithm with provable learning guarantees. In contrast to existing work, we do not require any assumption about the size or depth of the network except that it has a single output neuron, i.e., such as for binary classification tasks. We show that our FA algorithm can deliver its theoretical promises in practice, surpassing the learning performance of existing FA methods and matching backpropagation in binary classification tasks. Finally, we demonstrate the limits of our FA variant when the number of output neurons grows beyond a certain quantity.","lang":"eng"}],"citation":{"short":"M. Lechner, in:, 8th International Conference on Learning Representations, ICLR, 2020.","mla":"Lechner, Mathias. “Learning Representations for Binary-Classification without Backpropagation.” <i>8th International Conference on Learning Representations</i>, ICLR, 2020.","apa":"Lechner, M. (2020). Learning representations for binary-classification without backpropagation. In <i>8th International Conference on Learning Representations</i>. Virtual ; Addis Ababa, Ethiopia: ICLR.","ista":"Lechner M. 2020. Learning representations for binary-classification without backpropagation. 8th International Conference on Learning Representations. ICLR: International Conference on Learning Representations.","chicago":"Lechner, Mathias. “Learning Representations for Binary-Classification without Backpropagation.” In <i>8th International Conference on Learning Representations</i>. ICLR, 2020.","ieee":"M. Lechner, “Learning representations for binary-classification without backpropagation,” in <i>8th International Conference on Learning Representations</i>, Virtual ; Addis Ababa, Ethiopia, 2020.","ama":"Lechner M. Learning representations for binary-classification without backpropagation. In: <i>8th International Conference on Learning Representations</i>. ICLR; 2020."},"date_published":"2020-03-11T00:00:00Z","department":[{"_id":"GradSch"},{"_id":"ToHe"}],"language":[{"iso":"eng"}],"has_accepted_license":"1","author":[{"last_name":"Lechner","first_name":"Mathias","id":"3DC22916-F248-11E8-B48F-1D18A9856A87","full_name":"Lechner, Mathias"}],"article_processing_charge":"No","year":"2020","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Learning representations for binary-classification without backpropagation","conference":{"start_date":"2020-04-26","location":"Virtual ; Addis Ababa, Ethiopia","name":"ICLR: International Conference on Learning Representations","end_date":"2020-05-01"},"scopus_import":"1","main_file_link":[{"url":"https://openreview.net/forum?id=Bke61krFvS","open_access":"1"}],"corr_author":"1","file_date_updated":"2022-01-26T07:35:17Z","project":[{"_id":"25F42A32-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","name":"Formal methods for the design and analysis of complex systems","grant_number":"Z211"}],"license":"https://creativecommons.org/licenses/by-nc-nd/3.0/","month":"03","quality_controlled":"1","acknowledgement":"This research was supported in part by the Austrian Science Fund (FWF) under grant Z211-N23\r\n(Wittgenstein Award).\r\n","ddc":["000"],"status":"public","day":"11","file":[{"date_created":"2022-01-26T07:35:17Z","relation":"main_file","file_id":"10677","content_type":"application/pdf","checksum":"ea13d42dd4541ddb239b6a75821fd6c9","creator":"mlechner","date_updated":"2022-01-26T07:35:17Z","access_level":"open_access","file_name":"iclr_2020.pdf","success":1,"file_size":249431}],"tmp":{"short":"CC BY-NC-ND (3.0)","name":"Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode","image":"/images/cc_by_nc_nd.png"},"publication":"8th International Conference on Learning Representations","publication_status":"published","publisher":"ICLR"},{"main_file_link":[{"open_access":"1","url":"http://proceedings.mlr.press/v119/hasani20a.html"}],"project":[{"_id":"25F42A32-B435-11E9-9278-68D0E5697425","name":"Formal methods for the design and analysis of complex systems","grant_number":"Z211","call_identifier":"FWF"}],"file_date_updated":"2022-01-26T11:08:51Z","ddc":["000"],"acknowledgement":"RH and RG are partially supported by Horizon-2020 ECSEL Project grant No. 783163 (iDev40), Productive 4.0, and ATBMBFW CPS-IoT Ecosystem. ML was supported in part by the Austrian Science Fund (FWF) under grant Z211-N23\r\n(Wittgenstein Award). AA is supported by the National Science Foundation (NSF) Graduate Research Fellowship\r\nProgram. RH and DR are partially supported by The Boeing Company and JP Morgan Chase. This research work is\r\npartially drawn from the PhD dissertation of RH.\r\n","quality_controlled":"1","publication_status":"published","publication":"Proceedings of the 37th International Conference on Machine Learning","series_title":"PMLR","tmp":{"short":"CC BY-NC-ND (3.0)","name":"Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode","image":"/images/cc_by_nc_nd.png"},"file":[{"date_updated":"2022-01-26T11:08:51Z","creator":"cchlebak","checksum":"c9a4a29161777fc1a89ef451c040e3b1","content_type":"application/pdf","file_size":2329798,"success":1,"access_level":"open_access","file_name":"2020_PMLR_Hasani.pdf","date_created":"2022-01-26T11:08:51Z","relation":"main_file","file_id":"10691"}],"publication_identifier":{"issn":["2640-3498"]},"status":"public","type":"conference","oa_version":"Published Version","date_created":"2022-01-25T15:50:34Z","oa":1,"has_accepted_license":"1","language":[{"iso":"eng"}],"page":"4082-4093","date_published":"2020-01-01T00:00:00Z","department":[{"_id":"GradSch"},{"_id":"ToHe"}],"citation":{"chicago":"Hasani, Ramin, Mathias Lechner, Alexander Amini, Daniela Rus, and Radu Grosu. “A Natural Lottery Ticket Winner: Reinforcement Learning with Ordinary Neural Circuits.” In <i>Proceedings of the 37th International Conference on Machine Learning</i>, 4082–93. PMLR, 2020.","ista":"Hasani R, Lechner M, Amini A, Rus D, Grosu R. 2020. A natural lottery ticket winner: Reinforcement learning with ordinary neural circuits. Proceedings of the 37th International Conference on Machine Learning. ML: Machine LearningPMLR, PMLR, , 4082–4093.","ieee":"R. Hasani, M. Lechner, A. Amini, D. Rus, and R. Grosu, “A natural lottery ticket winner: Reinforcement learning with ordinary neural circuits,” in <i>Proceedings of the 37th International Conference on Machine Learning</i>, Virtual, 2020, pp. 4082–4093.","ama":"Hasani R, Lechner M, Amini A, Rus D, Grosu R. A natural lottery ticket winner: Reinforcement learning with ordinary neural circuits. In: <i>Proceedings of the 37th International Conference on Machine Learning</i>. PMLR. ; 2020:4082-4093.","apa":"Hasani, R., Lechner, M., Amini, A., Rus, D., &#38; Grosu, R. (2020). A natural lottery ticket winner: Reinforcement learning with ordinary neural circuits. In <i>Proceedings of the 37th International Conference on Machine Learning</i> (pp. 4082–4093). Virtual.","short":"R. Hasani, M. Lechner, A. Amini, D. Rus, R. Grosu, in:, Proceedings of the 37th International Conference on Machine Learning, 2020, pp. 4082–4093.","mla":"Hasani, Ramin, et al. “A Natural Lottery Ticket Winner: Reinforcement Learning with Ordinary Neural Circuits.” <i>Proceedings of the 37th International Conference on Machine Learning</i>, 2020, pp. 4082–93."},"date_updated":"2025-04-15T06:25:56Z","_id":"10673","abstract":[{"text":"We propose a neural information processing system obtained by re-purposing the function of a biological neural circuit model to govern simulated and real-world control tasks. Inspired by the structure of the nervous system of the soil-worm, C. elegans, we introduce ordinary neural circuits (ONCs), defined as the model of biological neural circuits reparameterized for the control of alternative tasks. We first demonstrate that ONCs realize networks with higher maximum flow compared to arbitrary wired networks. We then learn instances of ONCs to control a series of robotic tasks, including the autonomous parking of a real-world rover robot. For reconfiguration of the purpose of the neural circuit, we adopt a search-based optimization algorithm. Ordinary neural circuits perform on par and, in some cases, significantly surpass the performance of contemporary deep learning models. ONC networks are compact, 77% sparser than their counterpart neural controllers, and their neural dynamics are fully interpretable at the cell-level.","lang":"eng"}],"year":"2020","article_processing_charge":"No","author":[{"full_name":"Hasani, Ramin","first_name":"Ramin","last_name":"Hasani"},{"id":"3DC22916-F248-11E8-B48F-1D18A9856A87","full_name":"Lechner, Mathias","first_name":"Mathias","last_name":"Lechner"},{"full_name":"Amini, Alexander","first_name":"Alexander","last_name":"Amini"},{"full_name":"Rus, Daniela","last_name":"Rus","first_name":"Daniela"},{"full_name":"Grosu, Radu","last_name":"Grosu","first_name":"Radu"}],"alternative_title":["PMLR"],"scopus_import":"1","conference":{"location":"Virtual","start_date":"2020-07-12","end_date":"2020-07-18","name":"ML: Machine Learning"},"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","title":"A natural lottery ticket winner: Reinforcement learning with ordinary neural circuits"},{"type":"conference","article_number":"B54. 00007","oa_version":"Published Version","date_created":"2022-01-27T10:50:10Z","oa":1,"issue":"1","language":[{"iso":"eng"}],"citation":{"apa":"Zhou, H., Polshyn, H., Tanaguchi, T., Watanabe, K., &#38; Young, A. (2020). Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order. In <i>APS March Meeting 2020</i> (Vol. 65). Denver, CO, United States: American Physical Society.","mla":"Zhou, Haoxin, et al. “Sublattice Resolved Spin Wave Transport through Graphene Fractional Quantum Hall States as a Probe of Isospin Order.” <i>APS March Meeting 2020</i>, vol. 65, no. 1, B54. 00007, American Physical Society, 2020.","short":"H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020.","chicago":"Zhou, Haoxin, Hryhoriy Polshyn, Takashi Tanaguchi, Kenji Watanabe, and Andrea Young. “Sublattice Resolved Spin Wave Transport through Graphene Fractional Quantum Hall States as a Probe of Isospin Order.” In <i>APS March Meeting 2020</i>, Vol. 65. American Physical Society, 2020.","ista":"Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. 2020. Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B54. 00007.","ieee":"H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, and A. Young, “Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order,” in <i>APS March Meeting 2020</i>, Denver, CO, United States, 2020, vol. 65, no. 1.","ama":"Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order. In: <i>APS March Meeting 2020</i>. Vol 65. American Physical Society; 2020."},"date_published":"2020-03-01T00:00:00Z","date_updated":"2022-01-27T10:58:38Z","_id":"10693","abstract":[{"lang":"eng","text":"High quality graphene heterostructures host an array of fractional quantum Hall isospin ferromagnets with diverse spin and valley orders. While a variety of phase transitions have been observed, disentangling the isospin phase diagram of these states is hampered by the absence of direct probes of spin and valley order. I will describe nonlocal transport measurements based on launching spin waves from a gate defined lateral heterojunction, performed in ultra-clean Corbino geometry graphene devices. At high magnetic fields, we find that the spin-wave transport signal is detected in all FQH states between ν = 0 and 1; however, between ν = 1 and 2 only odd numerator FQH states show finite nonlocal transport, despite the identical ground state spin polarizations in odd- and even numerator states. The results reveal that the neutral spin-waves are both spin and sublattice polarized making them a sensitive probe of ground state sublattice structure. Armed with this understanding, we use nonlocal transport signal to a magnetic field tuned isospin phase transition, showing that the emergent even denominator state at ν = 1/2 in monolayer graphene is indeed a multicomponent state featuring equal populations on each sublattice."}],"extern":"1","year":"2020","article_processing_charge":"No","intvolume":"        65","author":[{"first_name":"Haoxin","last_name":"Zhou","full_name":"Zhou, Haoxin"},{"id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48","full_name":"Polshyn, Hryhoriy","first_name":"Hryhoriy","orcid":"0000-0001-8223-8896","last_name":"Polshyn"},{"first_name":"Takashi","last_name":"Tanaguchi","full_name":"Tanaguchi, Takashi"},{"full_name":"Watanabe, Kenji","last_name":"Watanabe","first_name":"Kenji"},{"full_name":"Young, Andrea","first_name":"Andrea","last_name":"Young"}],"alternative_title":["Bulletin of the American Physical Society"],"conference":{"location":"Denver, CO, United States","start_date":"2020-03-02","end_date":"2020-03-06","name":"APS: American Physical Society"},"title":"Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","main_file_link":[{"open_access":"1","url":"https://meetings.aps.org/Meeting/MAR20/Session/B54.7"}],"month":"03","quality_controlled":"1","publisher":"American Physical Society","publication_status":"published","publication":"APS March Meeting 2020","volume":65,"publication_identifier":{"issn":["0003-0503"]},"day":"01","status":"public"},{"publication_identifier":{"issn":["0003-0503"]},"day":"01","status":"public","publisher":"American Physical Society","publication_status":"published","publication":"APS March Meeting 2020","volume":65,"quality_controlled":"1","month":"03","main_file_link":[{"url":"https://meetings.aps.org/Meeting/MAR20/Session/B51.5","open_access":"1"}],"conference":{"end_date":"2020-03-06","name":"APS: American Physical Society","start_date":"2020-03-02","location":"Denver, CO, United States"},"title":"Correlated states and tunable topological bands in twisted monolayer-bilayer graphene heterostructures","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","alternative_title":["Bulletin of the American Physical Society"],"author":[{"full_name":"Polshyn, Hryhoriy","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48","first_name":"Hryhoriy","last_name":"Polshyn","orcid":"0000-0001-8223-8896"},{"full_name":"Zhu, Jihang","first_name":"Jihang","last_name":"Zhu"},{"last_name":"Kumar","first_name":"Manish","full_name":"Kumar, Manish"},{"full_name":"Taniguchi, Takashi","first_name":"Takashi","last_name":"Taniguchi"},{"full_name":"Watanabe, Kenji","first_name":"Kenji","last_name":"Watanabe"},{"last_name":"MacDonald","first_name":"Allan","full_name":"MacDonald, Allan"},{"full_name":"Young, Andrea","last_name":"Young","first_name":"Andrea"}],"intvolume":"        65","extern":"1","year":"2020","article_processing_charge":"No","language":[{"iso":"eng"}],"date_published":"2020-03-01T00:00:00Z","citation":{"ama":"Polshyn H, Zhu J, Kumar M, et al. Correlated states and tunable topological bands in twisted monolayer-bilayer graphene heterostructures. In: <i>APS March Meeting 2020</i>. Vol 65. American Physical Society; 2020.","ieee":"H. Polshyn <i>et al.</i>, “Correlated states and tunable topological bands in twisted monolayer-bilayer graphene heterostructures,” in <i>APS March Meeting 2020</i>, Denver, CO, United States, 2020, vol. 65, no. 1.","ista":"Polshyn H, Zhu J, Kumar M, Taniguchi T, Watanabe K, MacDonald A, Young A. 2020. Correlated states and tunable topological bands in twisted monolayer-bilayer graphene heterostructures. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B51.00005.","chicago":"Polshyn, Hryhoriy, Jihang Zhu, Manish Kumar, Takashi Taniguchi, Kenji Watanabe, Allan MacDonald, and Andrea Young. “Correlated States and Tunable Topological Bands in Twisted Monolayer-Bilayer Graphene Heterostructures.” In <i>APS March Meeting 2020</i>, Vol. 65. American Physical Society, 2020.","short":"H. Polshyn, J. Zhu, M. Kumar, T. Taniguchi, K. Watanabe, A. MacDonald, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020.","mla":"Polshyn, Hryhoriy, et al. “Correlated States and Tunable Topological Bands in Twisted Monolayer-Bilayer Graphene Heterostructures.” <i>APS March Meeting 2020</i>, vol. 65, no. 1, B51.00005, American Physical Society, 2020.","apa":"Polshyn, H., Zhu, J., Kumar, M., Taniguchi, T., Watanabe, K., MacDonald, A., &#38; Young, A. (2020). Correlated states and tunable topological bands in twisted monolayer-bilayer graphene heterostructures. In <i>APS March Meeting 2020</i> (Vol. 65). Denver, CO, United States: American Physical Society."},"date_updated":"2022-02-08T10:22:08Z","_id":"10696","abstract":[{"lang":"eng","text":"We experimentally investigate twisted van der Waals heterostructures of monolayer graphene rotated with respect to a bernal stacked graphene bilayer. We report transport measurements for devices with twist angles between 0.9 and 1.4°. The electric field allows efficient tuning of the width, isolation and the topology of the moiré bands in this system. By comparing magnetoresistance measurements to numerical simulations, we develop an understanding of the band structure. Finally, we observe correlated states at half- and quarter-fillings, which arise when narrow moire sublattice band is isolated by energy gaps from dispersive bands. We investigate the effects of in-plane and out-of-plane magnetic field on these states and discuss the implication for their spin- and valley- polarization."}],"oa":1,"issue":"1","type":"conference","article_number":"B51.00005","oa_version":"Published Version","date_created":"2022-01-28T10:09:19Z"},{"year":"2020","article_processing_charge":"No","extern":"1","intvolume":"        65","author":[{"full_name":"Zhang, Yuxuan","first_name":"Yuxuan","last_name":"Zhang"},{"full_name":"Serlin, Marec","last_name":"Serlin","first_name":"Marec"},{"first_name":"Charles","last_name":"Tschirhart","full_name":"Tschirhart, Charles"},{"orcid":"0000-0001-8223-8896","last_name":"Polshyn","first_name":"Hryhoriy","full_name":"Polshyn, Hryhoriy","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48"},{"full_name":"Zhu, Jiacheng","last_name":"Zhu","first_name":"Jiacheng"},{"full_name":"Balents, Leon","last_name":"Balents","first_name":"Leon"},{"full_name":"Huber, Martin E.","first_name":"Martin E.","last_name":"Huber"},{"full_name":"Taniguchi, Takashi","last_name":"Taniguchi","first_name":"Takashi"},{"full_name":"Watanabe, Kenji","first_name":"Kenji","last_name":"Watanabe"},{"last_name":"Young","first_name":"Andrea","full_name":"Young, Andrea"}],"related_material":{"record":[{"status":"public","id":"10619","relation":"other"}]},"alternative_title":["Bulletin of the American Physical Society"],"conference":{"start_date":"2020-03-02","location":"Denver, CO, United States","end_date":"2020-03-06","name":"APS: American Physical Society"},"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","title":"Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part I: Device fabrication and transport","oa_version":"Published Version","date_created":"2022-01-28T10:28:35Z","type":"conference","article_number":"B59.00012","issue":"1","oa":1,"citation":{"ieee":"Y. Zhang <i>et al.</i>, “Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part I: Device fabrication and transport,” in <i>APS March Meeting 2020</i>, Denver, CO, United States, 2020, vol. 65, no. 1.","ama":"Zhang Y, Serlin M, Tschirhart C, et al. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part I: Device fabrication and transport. In: <i>APS March Meeting 2020</i>. Vol 65. American Physical Society; 2020.","ista":"Zhang Y, Serlin M, Tschirhart C, Polshyn H, Zhu J, Balents L, Huber ME, Taniguchi T, Watanabe K, Young A. 2020. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part I: Device fabrication and transport. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B59.00012.","chicago":"Zhang, Yuxuan, Marec Serlin, Charles Tschirhart, Hryhoriy Polshyn, Jiacheng Zhu, Leon Balents, Martin E. Huber, Takashi Taniguchi, Kenji Watanabe, and Andrea Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part I: Device Fabrication and Transport.” In <i>APS March Meeting 2020</i>, Vol. 65. American Physical Society, 2020.","short":"Y. Zhang, M. Serlin, C. Tschirhart, H. Polshyn, J. Zhu, L. Balents, M.E. Huber, T. Taniguchi, K. Watanabe, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020.","mla":"Zhang, Yuxuan, et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part I: Device Fabrication and Transport.” <i>APS March Meeting 2020</i>, vol. 65, no. 1, B59.00012, American Physical Society, 2020.","apa":"Zhang, Y., Serlin, M., Tschirhart, C., Polshyn, H., Zhu, J., Balents, L., … Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part I: Device fabrication and transport. In <i>APS March Meeting 2020</i> (Vol. 65). Denver, CO, United States: American Physical Society."},"date_published":"2020-03-01T00:00:00Z","_id":"10697","abstract":[{"text":"We report the observation of a quantized anomalous Hall effect in a moiré heterostructure consisting of twisted bilayer graphene aligned to an encapsulating hBN substrate. The effect occurs at a density of 3 electrons per superlattice unit cell, where we observe magnetic hysteresis and a Hall resistance quantized to within 0.1% of the resistance quantum at temperatures as high as 3K. In this first of 3 talks, I will describe the fabrication procedure for our device as well as basic transport characterization measurements. I will introduce the phenomenology of twisted bilayer graphene and present evidence for hBN alignment as manifested in the hierarchy of symmetry-breaking gaps and anomalous magnetoresistance.","lang":"eng"}],"date_updated":"2023-02-21T15:57:52Z","language":[{"iso":"eng"}],"quality_controlled":"1","external_id":{"arxiv":["1907.00261"]},"acknowledgement":"I would like to thank the MURI program, Sloan foundation, AFOSR, and ARO for their generous support of this work.","publication":"APS March Meeting 2020","volume":65,"publisher":"American Physical Society","publication_status":"published","day":"01","status":"public","arxiv":1,"main_file_link":[{"url":"https://meetings.aps.org/Meeting/MAR20/Session/B59.12","open_access":"1"}],"month":"03"},{"status":"public","day":"01","arxiv":1,"volume":65,"publication":"APS March Meeting 2020","publication_status":"published","publisher":"American Physical Society","quality_controlled":"1","acknowledgement":"I would like to thank the MURI Program, AFOSR, Sloan Foundation, and the ARO for their generous support of this work.","external_id":{"arxiv":["1907.00261"]},"month":"03","main_file_link":[{"url":"https://meetings.aps.org/Meeting/MAR20/Session/B59.11","open_access":"1"}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","title":"Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part II: Temperature dependence and current switching","conference":{"name":"APS: American Physical Society","end_date":"2020-03-06","start_date":"2020-03-02","location":"Denver, CO, United States"},"alternative_title":["Bulletin of the American Physical Society"],"intvolume":"        65","author":[{"full_name":"Serlin, Marec","last_name":"Serlin","first_name":"Marec"},{"last_name":"Tschirhart","first_name":"Charles","full_name":"Tschirhart, Charles"},{"full_name":"Polshyn, Hryhoriy","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48","orcid":"0000-0001-8223-8896","last_name":"Polshyn","first_name":"Hryhoriy"},{"full_name":"Zhang, Yuxuan","first_name":"Yuxuan","last_name":"Zhang"},{"full_name":"Zhu, Jiacheng","first_name":"Jiacheng","last_name":"Zhu"},{"first_name":"Martin E.","last_name":"Huber","full_name":"Huber, Martin E."},{"full_name":"Balents, Leon","last_name":"Balents","first_name":"Leon"},{"first_name":"Kenji","last_name":"Watanabe","full_name":"Watanabe, Kenji"},{"full_name":"Tanaguchi, Takashi","last_name":"Tanaguchi","first_name":"Takashi"},{"full_name":"Young, Andrea","first_name":"Andrea","last_name":"Young"}],"related_material":{"record":[{"status":"public","id":"10619","relation":"other"}]},"article_processing_charge":"No","year":"2020","extern":"1","_id":"10698","date_updated":"2023-02-21T15:57:52Z","abstract":[{"text":"This is the second of three talks describing the observation and characterization of a ferromagnetic moiré heterostructure based on twisted bilayer graphene aligned to hexagonal boron nitride. I will compare the qualitative and quantitative features of this observed quantum anomalous Hall state to traditional systems engineered from thin film (Bi,Sb)2Te3 topological insulators. In particular, we find that the measured electronic energy gap of ~30K is several times higher than the Curie temperature, consistent with a lack of disorder associated with magnetic dopants. In this system, the quantization arises from spontaneous ferromagnetic polarization into a single spin and valley moiré subband, which is topological despite the lack of spin orbit coupling. I will also discuss the observation of current induced switching, which allows the magnetic state of the heterostructure to be controllably reversed with currents as small as a few nanoamperes.","lang":"eng"}],"citation":{"ista":"Serlin M, Tschirhart C, Polshyn H, Zhang Y, Zhu J, Huber ME, Balents L, Watanabe K, Tanaguchi T, Young A. 2020. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part II: Temperature dependence and current switching. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B59.00011.","chicago":"Serlin, Marec, Charles Tschirhart, Hryhoriy Polshyn, Yuxuan Zhang, Jiacheng Zhu, Martin E. Huber, Leon Balents, Kenji Watanabe, Takashi Tanaguchi, and Andrea Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part II: Temperature Dependence and Current Switching.” In <i>APS March Meeting 2020</i>, Vol. 65. American Physical Society, 2020.","ieee":"M. Serlin <i>et al.</i>, “Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part II: Temperature dependence and current switching,” in <i>APS March Meeting 2020</i>, Denver, CO, United States, 2020, vol. 65, no. 1.","ama":"Serlin M, Tschirhart C, Polshyn H, et al. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part II: Temperature dependence and current switching. In: <i>APS March Meeting 2020</i>. Vol 65. American Physical Society; 2020.","mla":"Serlin, Marec, et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part II: Temperature Dependence and Current Switching.” <i>APS March Meeting 2020</i>, vol. 65, no. 1, B59.00011, American Physical Society, 2020.","short":"M. Serlin, C. Tschirhart, H. Polshyn, Y. Zhang, J. Zhu, M.E. Huber, L. Balents, K. Watanabe, T. Tanaguchi, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020.","apa":"Serlin, M., Tschirhart, C., Polshyn, H., Zhang, Y., Zhu, J., Huber, M. E., … Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part II: Temperature dependence and current switching. In <i>APS March Meeting 2020</i> (Vol. 65). Denver, CO, United States: American Physical Society."},"date_published":"2020-03-01T00:00:00Z","language":[{"iso":"eng"}],"issue":"1","oa":1,"date_created":"2022-01-28T10:46:57Z","oa_version":"Published Version","article_number":"B59.00011","type":"conference"},{"conference":{"end_date":"2020-03-06","name":"APS: American Physical Society","location":"Denver, CO, United States","start_date":"2020-03-02"},"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","title":"Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part III: Scanning probe magnetometry","alternative_title":["Bulletin of the American Physical Society"],"intvolume":"        65","author":[{"full_name":"Tschirhart, Charles","last_name":"Tschirhart","first_name":"Charles"},{"full_name":"Serlin, Marec","first_name":"Marec","last_name":"Serlin"},{"first_name":"Hryhoriy","orcid":"0000-0001-8223-8896","last_name":"Polshyn","full_name":"Polshyn, Hryhoriy","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48"},{"full_name":"Zhang, Yuxuan","last_name":"Zhang","first_name":"Yuxuan"},{"first_name":"Jiacheng","last_name":"Zhu","full_name":"Zhu, Jiacheng"},{"full_name":"Balents, Leon","last_name":"Balents","first_name":"Leon"},{"first_name":"Martin E.","last_name":"Huber","full_name":"Huber, Martin E."},{"full_name":"Watanabe, Kenji","last_name":"Watanabe","first_name":"Kenji"},{"full_name":"Tanaguchi, Takashi","last_name":"Tanaguchi","first_name":"Takashi"},{"full_name":"Young, Andrea","first_name":"Andrea","last_name":"Young"}],"related_material":{"record":[{"status":"public","id":"10619","relation":"other"}]},"year":"2020","article_processing_charge":"No","extern":"1","date_published":"2020-03-01T00:00:00Z","citation":{"apa":"Tschirhart, C., Serlin, M., Polshyn, H., Zhang, Y., Zhu, J., Balents, L., … Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part III: Scanning probe magnetometry. In <i>APS March Meeting 2020</i> (Vol. 65). Denver, CO, United States: American Physical Society.","mla":"Tschirhart, Charles, et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part III: Scanning Probe Magnetometry.” <i>APS March Meeting 2020</i>, vol. 65, no. 1, B59.00013, American Physical Society, 2020.","short":"C. Tschirhart, M. Serlin, H. Polshyn, Y. Zhang, J. Zhu, L. Balents, M.E. Huber, K. Watanabe, T. Tanaguchi, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020.","chicago":"Tschirhart, Charles, Marec Serlin, Hryhoriy Polshyn, Yuxuan Zhang, Jiacheng Zhu, Leon Balents, Martin E. Huber, Kenji Watanabe, Takashi Tanaguchi, and Andrea Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part III: Scanning Probe Magnetometry.” In <i>APS March Meeting 2020</i>, Vol. 65. American Physical Society, 2020.","ista":"Tschirhart C, Serlin M, Polshyn H, Zhang Y, Zhu J, Balents L, Huber ME, Watanabe K, Tanaguchi T, Young A. 2020. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part III: Scanning probe magnetometry. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B59.00013.","ieee":"C. Tschirhart <i>et al.</i>, “Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part III: Scanning probe magnetometry,” in <i>APS March Meeting 2020</i>, Denver, CO, United States, 2020, vol. 65, no. 1.","ama":"Tschirhart C, Serlin M, Polshyn H, et al. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part III: Scanning probe magnetometry. In: <i>APS March Meeting 2020</i>. Vol 65. American Physical Society; 2020."},"date_updated":"2023-02-21T15:57:52Z","_id":"10699","abstract":[{"text":"This is the third of three talks describing the observation and characterization of a ferromagnetic moiré heterostructure based on twisted bilayer graphene aligned to hexagonal boron nitride. In this segment I will present scanning probe magnetometry data acquired using a nanoSQUID-on-tip microscope, which provides ~150 nm spatial resolution and a field sensitivity of ~10 nT/rtHz. We study the distribution of magnetic domains within the device as a function of density, magnetic field training, and DC current. Our data allow us to constrain the magnitude of the orbital magnetic moment of the electrons in the QAH state. Comparison with simultaneously acquired transport data allows us to precisely correlate single domain dynamics with discrete jumps in the observed anomalous Hall signal.","lang":"eng"}],"language":[{"iso":"eng"}],"issue":"1","oa":1,"oa_version":"Published Version","date_created":"2022-01-28T10:57:49Z","type":"conference","article_number":"B59.00013","day":"01","status":"public","arxiv":1,"publication_identifier":{"issn":["0003-0503"]},"publication":"APS March Meeting 2020","volume":65,"publisher":"American Physical Society","publication_status":"published","quality_controlled":"1","external_id":{"arxiv":["1907.00261"]},"acknowledgement":"I would like to thank the MURI program, Sloan foundation, AFOSR, and ARO for their generous support of this work. I would also like to thank the NSF GRFP and the Hertz foundation for their generous support of my graduate studies.","month":"03","main_file_link":[{"url":"https://meetings.aps.org/Meeting/MAR20/Session/B59.13","open_access":"1"}]}]