--- OA_place: repository OA_type: green _id: '19818' abstract: - lang: eng text: "We revisit the enduring problem of the 2×2×2 charge density wave (CDW) order in TiSe2, utilizing photon energy-dependent angle-resolved photoemission spectroscopy to probe the full three-dimensional high- and low-temperature electronic structure. Our measurements demonstrate how a mismatch of dimensionality between the 3D conduction bands and the quasi-2D valence bands in this system leads to a hybridization that is strongly \U0001D458\U0001D467 dependent. While such a momentum-selective coupling can provide the energy gain required to form the CDW, we show how additional “passenger” states remain, which couple only weakly to the CDW and thus dominate the low-energy physics in the ordered phase of TiSe2." article_number: '076404' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Matthew D. full_name: Watson, Matthew D. last_name: Watson - first_name: Oliver J. full_name: Clark, Oliver J. last_name: Clark - first_name: Federico full_name: Mazzola, Federico last_name: Mazzola - first_name: Igor full_name: Marković, Igor last_name: Marković - first_name: Veronika full_name: Sunko, Veronika id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3 last_name: Sunko orcid: 0000-0003-2724-3523 - first_name: Timur K. full_name: Kim, Timur K. last_name: Kim - first_name: Kai full_name: Rossnagel, Kai last_name: Rossnagel - first_name: Philip D. C. full_name: King, Philip D. C. last_name: King citation: ama: "Watson MD, Clark OJ, Mazzola F, et al. Orbital- and \U0001D458\U0001D467-selective hybridization of Se 4⁢\U0001D45D and Ti 3⁢\U0001D451 states in the charge density wave phase of TiSe2. Physical Review Letters. 2019;122(7). doi:10.1103/physrevlett.122.076404" apa: "Watson, M. D., Clark, O. J., Mazzola, F., Marković, I., Sunko, V., Kim, T. K., … King, P. D. C. (2019). Orbital- and \U0001D458\U0001D467-selective hybridization of Se 4⁢\U0001D45D and Ti 3⁢\U0001D451 states in the charge density wave phase of TiSe2. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.122.076404" chicago: "Watson, Matthew D., Oliver J. Clark, Federico Mazzola, Igor Marković, Veronika Sunko, Timur K. Kim, Kai Rossnagel, and Philip D. C. King. “Orbital- and \U0001D458\U0001D467-Selective Hybridization of Se 4⁢\U0001D45D and Ti 3⁢\U0001D451 States in the Charge Density Wave Phase of TiSe2.” Physical Review Letters. American Physical Society, 2019. https://doi.org/10.1103/physrevlett.122.076404." ieee: "M. D. Watson et al., “Orbital- and \U0001D458\U0001D467-selective hybridization of Se 4⁢\U0001D45D and Ti 3⁢\U0001D451 states in the charge density wave phase of TiSe2,” Physical Review Letters, vol. 122, no. 7. American Physical Society, 2019." ista: "Watson MD, Clark OJ, Mazzola F, Marković I, Sunko V, Kim TK, Rossnagel K, King PDC. 2019. Orbital- and \U0001D458\U0001D467-selective hybridization of Se 4⁢\U0001D45D and Ti 3⁢\U0001D451 states in the charge density wave phase of TiSe2. Physical Review Letters. 122(7), 076404." mla: "Watson, Matthew D., et al. “Orbital- and \U0001D458\U0001D467-Selective Hybridization of Se 4⁢\U0001D45D and Ti 3⁢\U0001D451 States in the Charge Density Wave Phase of TiSe2.” Physical Review Letters, vol. 122, no. 7, 076404, American Physical Society, 2019, doi:10.1103/physrevlett.122.076404." short: M.D. Watson, O.J. Clark, F. Mazzola, I. Marković, V. Sunko, T.K. Kim, K. Rossnagel, P.D.C. King, Physical Review Letters 122 (2019). date_created: 2025-06-10T09:18:44Z date_published: 2019-02-22T00:00:00Z date_updated: 2025-06-10T12:34:24Z day: '22' doi: 10.1103/physrevlett.122.076404 extern: '1' external_id: arxiv: - '1808.07141' pmid: - '30848608' intvolume: ' 122' issue: '7' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.1808.07141 month: '02' oa: 1 oa_version: Preprint pmid: 1 publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: "Orbital- and \U0001D458\U0001D467-selective hybridization of Se 4⁢\U0001D45D and Ti 3⁢\U0001D451 states in the charge density wave phase of TiSe2" type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 122 year: '2019' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '19824' abstract: - lang: eng text: Pressure represents a clean tuning parameter for traversing the complex phase diagrams of interacting electron systems, and as such has proved of key importance in the study of quantum materials. Application of controlled uniaxial pressure has recently been shown to more than double the transition temperature of the unconventional superconductor Sr2RuO4, leading to a pronounced peak in Tc versus strain whose origin is still under active debate. Here we develop a simple and compact method to passively apply large uniaxial pressures in restricted sample environments, and utilise this to study the evolution of the electronic structure of Sr2RuO4 using angle-resolved photoemission. We directly visualise how uniaxial stress drives a Lifshitz transition of the γ-band Fermi surface, pointing to the key role of strain-tuning its associated van Hove singularity to the Fermi level in mediating the peak in Tc. Our measurements provide stringent constraints for theoretical models of the strain-tuned electronic structure evolution of Sr2RuO4. More generally, our experimental approach opens the door to future studies of strain-tuned phase transitions not only using photoemission but also other experimental techniques where large pressure cells or piezoelectric-based devices may be difficult to implement. article_number: '46' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Veronika full_name: Sunko, Veronika id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3 last_name: Sunko orcid: 0000-0003-2724-3523 - first_name: Edgar full_name: Abarca Morales, Edgar last_name: Abarca Morales - first_name: Igor full_name: Marković, Igor last_name: Marković - first_name: Mark E. full_name: Barber, Mark E. last_name: Barber - first_name: Dijana full_name: Milosavljević, Dijana last_name: Milosavljević - first_name: Federico full_name: Mazzola, Federico last_name: Mazzola - first_name: Dmitry A. full_name: Sokolov, Dmitry A. last_name: Sokolov - first_name: Naoki full_name: Kikugawa, Naoki last_name: Kikugawa - first_name: Cephise full_name: Cacho, Cephise last_name: Cacho - first_name: Pavel full_name: Dudin, Pavel last_name: Dudin - first_name: Helge full_name: Rosner, Helge last_name: Rosner - first_name: Clifford W. full_name: Hicks, Clifford W. last_name: Hicks - first_name: Philip D. C. full_name: King, Philip D. C. last_name: King - first_name: Andrew P. full_name: Mackenzie, Andrew P. last_name: Mackenzie citation: ama: Sunko V, Abarca Morales E, Marković I, et al. Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4. npj Quantum Materials. 2019;4. doi:10.1038/s41535-019-0185-9 apa: Sunko, V., Abarca Morales, E., Marković, I., Barber, M. E., Milosavljević, D., Mazzola, F., … Mackenzie, A. P. (2019). Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4. Npj Quantum Materials. Springer Nature. https://doi.org/10.1038/s41535-019-0185-9 chicago: Sunko, Veronika, Edgar Abarca Morales, Igor Marković, Mark E. Barber, Dijana Milosavljević, Federico Mazzola, Dmitry A. Sokolov, et al. “Direct Observation of a Uniaxial Stress-Driven Lifshitz Transition in Sr2RuO4.” Npj Quantum Materials. Springer Nature, 2019. https://doi.org/10.1038/s41535-019-0185-9. ieee: V. Sunko et al., “Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4,” npj Quantum Materials, vol. 4. Springer Nature, 2019. ista: Sunko V, Abarca Morales E, Marković I, Barber ME, Milosavljević D, Mazzola F, Sokolov DA, Kikugawa N, Cacho C, Dudin P, Rosner H, Hicks CW, King PDC, Mackenzie AP. 2019. Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4. npj Quantum Materials. 4, 46. mla: Sunko, Veronika, et al. “Direct Observation of a Uniaxial Stress-Driven Lifshitz Transition in Sr2RuO4.” Npj Quantum Materials, vol. 4, 46, Springer Nature, 2019, doi:10.1038/s41535-019-0185-9. short: V. Sunko, E. Abarca Morales, I. Marković, M.E. Barber, D. Milosavljević, F. Mazzola, D.A. Sokolov, N. Kikugawa, C. Cacho, P. Dudin, H. Rosner, C.W. Hicks, P.D.C. King, A.P. Mackenzie, Npj Quantum Materials 4 (2019). date_created: 2025-06-10T09:21:37Z date_published: 2019-08-19T00:00:00Z date_updated: 2025-06-11T14:14:26Z day: '19' ddc: - '530' doi: 10.1038/s41535-019-0185-9 extern: '1' external_id: arxiv: - '1903.09581' has_accepted_license: '1' intvolume: ' 4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1038/s41535-019-0185-9 month: '08' oa: 1 oa_version: Published Version publication: npj Quantum Materials publication_identifier: issn: - 2397-4648 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4 tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 4 year: '2019' ... --- OA_place: repository OA_type: green _id: '19825' abstract: - lang: eng text: "We study the electronic structure of delafossite PtCoO2 to elucidate its extremely small resistivity and high mobility. The band exhibits steep dispersion near the Fermi level despite the fact that it is formed mainly by Pt \U0001D451 orbitals that are typically localized. We propose a picture based on two hidden kagome-lattice-like electronic structures: one originating from Pt \U0001D460+\U0001D45D\U0001D465/\U0001D45D\U0001D466 orbitals, and the other from Pt \U0001D4513⁢\U0001D4672−\U0001D45F2+\U0001D451\U0001D465⁢\U0001D466/\U0001D451\U0001D4652−\U0001D4662 orbitals, each placed on the bonds of the triangular lattice. In particular, we find that the underlying Pt \U0001D460+\U0001D45D\U0001D465/\U0001D45D\U0001D466 bands actually determine the steepness of the original dispersion, so that the large Fermi velocity can be attributed to the large width of the Pt \U0001D460+\U0001D45D\U0001D465/\U0001D45D\U0001D466 band. In addition, the kagome-like electronic structure gives rise to “orbital-momentum locking” on the Fermi surface, which reduces the electron scattering by impurities. We conclude that the combination of the large Fermi velocity and the orbital-momentum locking is likely to be the origin of the extremely small resistivity in PtCoO2." article_number: '045002' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Hidetomo full_name: Usui, Hidetomo last_name: Usui - first_name: Masayuki full_name: Ochi, Masayuki last_name: Ochi - first_name: Sota full_name: Kitamura, Sota last_name: Kitamura - first_name: Takashi full_name: Oka, Takashi last_name: Oka - first_name: Daisuke full_name: Ogura, Daisuke last_name: Ogura - first_name: Helge full_name: Rosner, Helge last_name: Rosner - first_name: Maurits W. full_name: Haverkort, Maurits W. last_name: Haverkort - first_name: Veronika full_name: Sunko, Veronika id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3 last_name: Sunko orcid: 0000-0003-2724-3523 - first_name: Philip D. C. full_name: King, Philip D. C. last_name: King - first_name: Andrew P. full_name: Mackenzie, Andrew P. last_name: Mackenzie - first_name: Kazuhiko full_name: Kuroki, Kazuhiko last_name: Kuroki citation: ama: Usui H, Ochi M, Kitamura S, et al. Hidden kagome-lattice picture and origin of high conductivity in delafossite PtCoO2. Physical Review Materials. 2019;3(4). doi:10.1103/physrevmaterials.3.045002 apa: Usui, H., Ochi, M., Kitamura, S., Oka, T., Ogura, D., Rosner, H., … Kuroki, K. (2019). Hidden kagome-lattice picture and origin of high conductivity in delafossite PtCoO2. Physical Review Materials. American Physical Society. https://doi.org/10.1103/physrevmaterials.3.045002 chicago: Usui, Hidetomo, Masayuki Ochi, Sota Kitamura, Takashi Oka, Daisuke Ogura, Helge Rosner, Maurits W. Haverkort, et al. “Hidden Kagome-Lattice Picture and Origin of High Conductivity in Delafossite PtCoO2.” Physical Review Materials. American Physical Society, 2019. https://doi.org/10.1103/physrevmaterials.3.045002. ieee: H. Usui et al., “Hidden kagome-lattice picture and origin of high conductivity in delafossite PtCoO2,” Physical Review Materials, vol. 3, no. 4. American Physical Society, 2019. ista: Usui H, Ochi M, Kitamura S, Oka T, Ogura D, Rosner H, Haverkort MW, Sunko V, King PDC, Mackenzie AP, Kuroki K. 2019. Hidden kagome-lattice picture and origin of high conductivity in delafossite PtCoO2. Physical Review Materials. 3(4), 045002. mla: Usui, Hidetomo, et al. “Hidden Kagome-Lattice Picture and Origin of High Conductivity in Delafossite PtCoO2.” Physical Review Materials, vol. 3, no. 4, 045002, American Physical Society, 2019, doi:10.1103/physrevmaterials.3.045002. short: H. Usui, M. Ochi, S. Kitamura, T. Oka, D. Ogura, H. Rosner, M.W. Haverkort, V. Sunko, P.D.C. King, A.P. Mackenzie, K. Kuroki, Physical Review Materials 3 (2019). date_created: 2025-06-10T09:22:04Z date_published: 2019-04-12T00:00:00Z date_updated: 2025-06-11T06:05:56Z day: '12' doi: 10.1103/physrevmaterials.3.045002 extern: '1' external_id: arxiv: - '1812.07213' intvolume: ' 3' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.1812.07213 month: '04' oa: 1 oa_version: Preprint publication: Physical Review Materials publication_identifier: issn: - 2475-9953 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Hidden kagome-lattice picture and origin of high conductivity in delafossite PtCoO2 type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 3 year: '2019' ... --- OA_place: repository OA_type: green _id: '19826' abstract: - lang: eng text: We investigate the electronic structure of a two-dimensional electron gas created at the surface of the multivalley semimetal 1⁢T −PtSe2. Using angle-resolved photoemission and first-principles-based surface space-charge calculations, we show how the induced quantum well sub-band states form multiple Fermi surfaces, which exhibit highly anisotropic Rashba-like spin splittings. We further show how the presence of both electronlike and holelike bulk carriers causes the near-surface band bending potential to develop an unusual nonmonotonic form, with spatially segregated electron accumulation and hole accumulation regions, which in turn amplifies the induced spin splitting. Our results thus demonstrate the novel environment that semimetals provide for tailoring electrostatically induced potential profiles and their corresponding quantum sub-band states. article_number: '045438' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: O. J. full_name: Clark, O. J. last_name: Clark - first_name: F. full_name: Mazzola, F. last_name: Mazzola - first_name: J. full_name: Feng, J. last_name: Feng - first_name: Veronika full_name: Sunko, Veronika id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3 last_name: Sunko orcid: 0000-0003-2724-3523 - first_name: I. full_name: Marković, I. last_name: Marković - first_name: L. full_name: Bawden, L. last_name: Bawden - first_name: T. K. full_name: Kim, T. K. last_name: Kim - first_name: P. D. C. full_name: King, P. D. C. last_name: King - first_name: M. S. full_name: Bahramy, M. S. last_name: Bahramy citation: ama: Clark OJ, Mazzola F, Feng J, et al. Dual quantum confinement and anisotropic spin splitting in the multivalley semimetal PtSe2. Physical Review B. 2019;99(4). doi:10.1103/physrevb.99.045438 apa: Clark, O. J., Mazzola, F., Feng, J., Sunko, V., Marković, I., Bawden, L., … Bahramy, M. S. (2019). Dual quantum confinement and anisotropic spin splitting in the multivalley semimetal PtSe2. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.99.045438 chicago: Clark, O. J., F. Mazzola, J. Feng, Veronika Sunko, I. Marković, L. Bawden, T. K. Kim, P. D. C. King, and M. S. Bahramy. “Dual Quantum Confinement and Anisotropic Spin Splitting in the Multivalley Semimetal PtSe2.” Physical Review B. American Physical Society, 2019. https://doi.org/10.1103/physrevb.99.045438. ieee: O. J. Clark et al., “Dual quantum confinement and anisotropic spin splitting in the multivalley semimetal PtSe2,” Physical Review B, vol. 99, no. 4. American Physical Society, 2019. ista: Clark OJ, Mazzola F, Feng J, Sunko V, Marković I, Bawden L, Kim TK, King PDC, Bahramy MS. 2019. Dual quantum confinement and anisotropic spin splitting in the multivalley semimetal PtSe2. Physical Review B. 99(4), 045438. mla: Clark, O. J., et al. “Dual Quantum Confinement and Anisotropic Spin Splitting in the Multivalley Semimetal PtSe2.” Physical Review B, vol. 99, no. 4, 045438, American Physical Society, 2019, doi:10.1103/physrevb.99.045438. short: O.J. Clark, F. Mazzola, J. Feng, V. Sunko, I. Marković, L. Bawden, T.K. Kim, P.D.C. King, M.S. Bahramy, Physical Review B 99 (2019). date_created: 2025-06-10T09:22:38Z date_published: 2019-01-25T00:00:00Z date_updated: 2025-06-11T06:08:51Z day: '25' doi: 10.1103/physrevb.99.045438 extern: '1' external_id: arxiv: - '1812.04485' intvolume: ' 99' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.1812.04485 month: '01' oa: 1 oa_version: Preprint publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Dual quantum confinement and anisotropic spin splitting in the multivalley semimetal PtSe2 type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 99 year: '2019' ... --- OA_place: repository OA_type: green _id: '19987' abstract: - lang: eng text: 'These lecture notes are based on Yang’s talk at the MATRIX program Geometric R-Matrices: from Geometry to Probability, at the University of Melbourne, Dec. 18–22, 2017, and Zhao’s talk at Perimeter Institute for Theoretical Physics in January 2018. We give an introductory survey of the results in Yang and Zhao (Quiver varieties and elliptic quantum groups, 2017. arxiv1708.01418). We discuss a sheafified elliptic quantum group associated to any symmetric Kac-Moody Lie algebra. The sheafification is obtained by applying the equivariant elliptic cohomological theory to the moduli space of representations of a preprojective algebra. By construction, the elliptic quantum group naturally acts on the equivariant elliptic cohomology of Nakajima quiver varieties. As an application, we obtain a relation between the sheafified elliptic quantum group and the global affine Grassmannian over an elliptic curve.' acknowledgement: 'Y.Y. would like to thank the organizers of the MATRIX program Geometric R-Matrices: from Geometry to Probability for their kind invitation, and many participants of the program for useful discussions, including Vassily Gorbounov, Andrei Okounkov, Allen Knutson, Hitoshi Konno, Paul Zinn-Justin. Proposition 1 and Sect. 3.3 are new, for which we thank Hitoshi Konno for interesting discussions and communications. These notes were written when both authors were visiting the Perimeter Institute for Theoretical Physics (PI). We are grateful to PI for the hospitality.' alternative_title: - MATRIX Book Series article_processing_charge: No arxiv: 1 author: - first_name: Yaping full_name: Yang, Yaping id: 360D8648-F248-11E8-B48F-1D18A9856A87 last_name: Yang - first_name: Gufang full_name: Zhao, Gufang id: 2BC2AC5E-F248-11E8-B48F-1D18A9856A87 last_name: Zhao citation: ama: 'Yang Y, Zhao G. How to Sheafify an Elliptic Quantum Group. In: 2017 MATRIX Annals. Vol 2. MXBS. Cham: Springer International Publishing; 2019:675-691. doi:10.1007/978-3-030-04161-8_54' apa: 'Yang, Y., & Zhao, G. (2019). How to Sheafify an Elliptic Quantum Group. In 2017 MATRIX Annals (Vol. 2, pp. 675–691). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-030-04161-8_54' chicago: 'Yang, Yaping, and Gufang Zhao. “How to Sheafify an Elliptic Quantum Group.” In 2017 MATRIX Annals, 2:675–91. MXBS. Cham: Springer International Publishing, 2019. https://doi.org/10.1007/978-3-030-04161-8_54.' ieee: 'Y. Yang and G. Zhao, “How to Sheafify an Elliptic Quantum Group,” in 2017 MATRIX Annals, vol. 2, Cham: Springer International Publishing, 2019, pp. 675–691.' ista: 'Yang Y, Zhao G. 2019.How to Sheafify an Elliptic Quantum Group. In: 2017 MATRIX Annals. MATRIX Book Series, vol. 2, 675–691.' mla: Yang, Yaping, and Gufang Zhao. “How to Sheafify an Elliptic Quantum Group.” 2017 MATRIX Annals, vol. 2, Springer International Publishing, 2019, pp. 675–91, doi:10.1007/978-3-030-04161-8_54. short: Y. Yang, G. Zhao, in:, 2017 MATRIX Annals, Springer International Publishing, Cham, 2019, pp. 675–691. date_created: 2025-07-10T13:31:38Z date_published: 2019-03-25T00:00:00Z date_updated: 2025-09-23T11:59:52Z day: '25' department: - _id: TaHa doi: 10.1007/978-3-030-04161-8_54 external_id: arxiv: - '1803.06627' intvolume: ' 2' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.1803.06627 month: '03' oa: 1 oa_version: Preprint page: 675-691 place: Cham publication: 2017 MATRIX Annals publication_identifier: eisbn: - '9783030041618' eissn: - 2523-305X isbn: - '9783030041601' issn: - 2523-3041 publication_status: published publisher: Springer International Publishing quality_controlled: '1' series_title: MXBS status: public title: How to Sheafify an Elliptic Quantum Group type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2 year: '2019' ... --- OA_place: repository OA_type: green _id: '19988' abstract: - lang: eng text: Quantitative studies of cell metabolism are often based on large chemical reaction network models. A steady-state approach is suited to analyze phenomena on the timescale of cell growth and circumvents the problem of incomplete experimental knowledge on kinetic laws and parameters, but it should be supported by a correct implementation of thermodynamic constraints. In this chapter, we review the latter aspect, highlighting its computational challenges and physical insights. The simple introduction of Gibbs inequalities avoids the presence of unfeasible loops allowing for correct timescale analysis, but leads to possibly non-convex feasible flux spaces whose exploration needs efficient algorithms. We briefly review the implementation of thermodynamics through variational principles in constraint-based models of metabolic networks. article_processing_charge: No arxiv: 1 author: - first_name: A full_name: De Martino, A last_name: De Martino - first_name: Daniele full_name: De Martino, Daniele id: 3FF5848A-F248-11E8-B48F-1D18A9856A87 last_name: De Martino orcid: 0000-0002-5214-4706 - first_name: E full_name: Marinari, E last_name: Marinari citation: ama: 'De Martino A, De Martino D, Marinari E. The Essential Role of Thermodynamics in Metabolic Network Modeling: Physical Insights and Computational Challenges. In: Chemical Kinetics. World Scientific Publishing; 2019:455-471. doi:10.1142/9781786347015_0018' apa: 'De Martino, A., De Martino, D., & Marinari, E. (2019). The Essential Role of Thermodynamics in Metabolic Network Modeling: Physical Insights and Computational Challenges. In Chemical Kinetics (pp. 455–471). World Scientific Publishing. https://doi.org/10.1142/9781786347015_0018' chicago: 'De Martino, A, Daniele De Martino, and E Marinari. “The Essential Role of Thermodynamics in Metabolic Network Modeling: Physical Insights and Computational Challenges.” In Chemical Kinetics, 455–71. World Scientific Publishing, 2019. https://doi.org/10.1142/9781786347015_0018.' ieee: 'A. De Martino, D. De Martino, and E. Marinari, “The Essential Role of Thermodynamics in Metabolic Network Modeling: Physical Insights and Computational Challenges,” in Chemical Kinetics, World Scientific Publishing, 2019, pp. 455–471.' ista: 'De Martino A, De Martino D, Marinari E. 2019.The Essential Role of Thermodynamics in Metabolic Network Modeling: Physical Insights and Computational Challenges. In: Chemical Kinetics. , 455–471.' mla: 'De Martino, A., et al. “The Essential Role of Thermodynamics in Metabolic Network Modeling: Physical Insights and Computational Challenges.” Chemical Kinetics, World Scientific Publishing, 2019, pp. 455–71, doi:10.1142/9781786347015_0018.' short: A. De Martino, D. De Martino, E. Marinari, in:, Chemical Kinetics, World Scientific Publishing, 2019, pp. 455–471. date_created: 2025-07-10T13:34:01Z date_published: 2019-09-01T00:00:00Z date_updated: 2025-09-23T11:53:34Z day: '01' department: - _id: GaTk doi: 10.1142/9781786347015_0018 external_id: arxiv: - '1902.07129' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.1902.07129 month: '09' oa: 1 oa_version: Preprint page: 455-471 publication: Chemical Kinetics publication_identifier: eisbn: - '9781786347022' isbn: - '9781786347008' publication_status: published publisher: World Scientific Publishing quality_controlled: '1' status: public title: 'The Essential Role of Thermodynamics in Metabolic Network Modeling: Physical Insights and Computational Challenges' type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2019' ... --- OA_type: closed access _id: '19989' abstract: - lang: ger text: Neurone empfangen Eingangssignale, konvertieren diese in Aktionspotenziale und generieren schließlich Ausgangssignale auf ihren Zielzellen. Dabei sind die zu überwindenden räumlichen Distanzen oft groß. Daher ist entscheidend, dass elektrische Signale in Nervenzellen schnell von einem zum anderen Ort geleitet werden können. Diese wichtige Aufgabe erfüllt das Axon, der „Ausgangsfortsatz“ der Nervenzelle. Für die schnelle Leitung des Aktionspotenzials sind sowohl die passiven Eigenschaften des axonalen Kabels als auch die aktiven Eigenschaften der Zellmembran von entscheidender Bedeutung. Die Evolution bedient sich zweier Tricks, um die Leitungsgeschwindigkeit des Aktionspotenzials zu maximieren. Der eine Trick ist die Zunahme des Axondurchmessers. Der andere Trick ist die Ausbildung von Markscheiden. Dies führt bei nahezu gleichem Platzbedarf zu einer Zunahme der Leistungsgeschwindigkeit um fast zwei Größenordnungen. Die Aktionspotenzialleitung an myelinisierten Axonen erfolgt „saltatorisch“. article_processing_charge: No author: - first_name: Peter M full_name: Jonas, Peter M id: 353C1B58-F248-11E8-B48F-1D18A9856A87 last_name: Jonas orcid: 0000-0001-5001-4804 citation: ama: 'Jonas PM. Aktionspotenzial: Fortleitung im Axon. In: Physiologie des Menschen. 32nd ed. Springer-Lehrbuch. Berlin, Heidelberg: Springer Nature; 2019:72-82. doi:10.1007/978-3-662-56468-4_7' apa: 'Jonas, P. M. (2019). Aktionspotenzial: Fortleitung im Axon. In Physiologie des Menschen (32nd ed., pp. 72–82). Berlin, Heidelberg: Springer Nature. https://doi.org/10.1007/978-3-662-56468-4_7' chicago: 'Jonas, Peter M. “Aktionspotenzial: Fortleitung im Axon.” In Physiologie des Menschen, 32nd ed., 72–82. Springer-Lehrbuch. Berlin, Heidelberg: Springer Nature, 2019. https://doi.org/10.1007/978-3-662-56468-4_7.' ieee: 'P. M. Jonas, “Aktionspotenzial: Fortleitung im Axon,” in Physiologie des Menschen, 32nd ed., Berlin, Heidelberg: Springer Nature, 2019, pp. 72–82.' ista: 'Jonas PM. 2019.Aktionspotenzial: Fortleitung im Axon. In: Physiologie des Menschen. , 72–82.' mla: 'Jonas, Peter M. “Aktionspotenzial: Fortleitung im Axon.” Physiologie des Menschen, 32nd ed., Springer Nature, 2019, pp. 72–82, doi:10.1007/978-3-662-56468-4_7.' short: P.M. Jonas, in:, Physiologie des Menschen, 32nd ed., Springer Nature, Berlin, Heidelberg, 2019, pp. 72–82. corr_author: '1' date_created: 2025-07-10T13:36:36Z date_published: 2019-04-02T00:00:00Z date_updated: 2025-09-23T11:44:57Z day: '02' department: - _id: PeJo doi: 10.1007/978-3-662-56468-4_7 edition: '32' language: - iso: ger month: '04' oa_version: None page: 72-82 place: Berlin, Heidelberg publication: Physiologie des Menschen publication_identifier: eisbn: - '9783662564684' eissn: - 2512-5214 isbn: - '9783662564677' issn: - 0937-7433 publication_status: published publisher: Springer Nature quality_controlled: '1' series_title: Springer-Lehrbuch status: public title: 'Aktionspotenzial: Fortleitung im Axon' type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2019' ... --- OA_place: publisher OA_type: hybrid _id: '10190' abstract: - lang: eng text: 'The verification of concurrent programs remains an open challenge, as thread interaction has to be accounted for, which leads to state-space explosion. Stateless model checking battles this problem by exploring traces rather than states of the program. As there are exponentially many traces, dynamic partial-order reduction (DPOR) techniques are used to partition the trace space into equivalence classes, and explore a few representatives from each class. The standard equivalence that underlies most DPOR techniques is the happens-before equivalence, however recent works have spawned a vivid interest towards coarser equivalences. The efficiency of such approaches is a product of two parameters: (i) the size of the partitioning induced by the equivalence, and (ii) the time spent by the exploration algorithm in each class of the partitioning. In this work, we present a new equivalence, called value-happens-before and show that it has two appealing features. First, value-happens-before is always at least as coarse as the happens-before equivalence, and can be even exponentially coarser. Second, the value-happens-before partitioning is efficiently explorable when the number of threads is bounded. We present an algorithm called value-centric DPOR (VCDPOR), which explores the underlying partitioning using polynomial time per class. Finally, we perform an experimental evaluation of VCDPOR on various benchmarks, and compare it against other state-of-the-art approaches. Our results show that value-happens-before typically induces a significant reduction in the size of the underlying partitioning, which leads to a considerable reduction in the running time for exploring the whole partitioning.' acknowledgement: "The authors would also like to thank anonymous referees for their valuable comments and helpful suggestions. This work is supported by the Austrian Science Fund (FWF) NFN grants S11407-N23 (RiSE/SHiNE) and S11402-N23 (RiSE/SHiNE), by the Vienna Science and Technology Fund (WWTF) Project ICT15-003, and by the Austrian Science Fund (FWF) Schrodinger grant J-4220.\r\n" article_number: '124' article_processing_charge: No arxiv: 1 author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 - first_name: Viktor full_name: Toman, Viktor id: 3AF3DA7C-F248-11E8-B48F-1D18A9856A87 last_name: Toman orcid: 0000-0001-9036-063X citation: ama: 'Chatterjee K, Pavlogiannis A, Toman V. Value-centric dynamic partial order reduction. In: Proceedings of the 34th ACM International Conference on Object-Oriented Programming, Systems, Languages, and Applications. Vol 3. ACM; 2019. doi:10.1145/3360550' apa: 'Chatterjee, K., Pavlogiannis, A., & Toman, V. (2019). Value-centric dynamic partial order reduction. In Proceedings of the 34th ACM International Conference on Object-Oriented Programming, Systems, Languages, and Applications (Vol. 3). Athens, Greece: ACM. https://doi.org/10.1145/3360550' chicago: Chatterjee, Krishnendu, Andreas Pavlogiannis, and Viktor Toman. “Value-Centric Dynamic Partial Order Reduction.” In Proceedings of the 34th ACM International Conference on Object-Oriented Programming, Systems, Languages, and Applications, Vol. 3. ACM, 2019. https://doi.org/10.1145/3360550. ieee: K. Chatterjee, A. Pavlogiannis, and V. Toman, “Value-centric dynamic partial order reduction,” in Proceedings of the 34th ACM International Conference on Object-Oriented Programming, Systems, Languages, and Applications, Athens, Greece, 2019, vol. 3. ista: 'Chatterjee K, Pavlogiannis A, Toman V. 2019. Value-centric dynamic partial order reduction. Proceedings of the 34th ACM International Conference on Object-Oriented Programming, Systems, Languages, and Applications. OOPSLA: Object-oriented Programming, Systems, Languages and Applications vol. 3, 124.' mla: Chatterjee, Krishnendu, et al. “Value-Centric Dynamic Partial Order Reduction.” Proceedings of the 34th ACM International Conference on Object-Oriented Programming, Systems, Languages, and Applications, vol. 3, 124, ACM, 2019, doi:10.1145/3360550. short: K. Chatterjee, A. Pavlogiannis, V. Toman, in:, Proceedings of the 34th ACM International Conference on Object-Oriented Programming, Systems, Languages, and Applications, ACM, 2019. conference: end_date: 2019-10-25 location: Athens, Greece name: 'OOPSLA: Object-oriented Programming, Systems, Languages and Applications' start_date: 2019-10-23 corr_author: '1' date_created: 2021-10-27T14:57:06Z date_published: 2019-10-10T00:00:00Z date_updated: 2026-04-08T07:00:31Z day: '10' ddc: - '000' department: - _id: GradSch - _id: KrCh doi: 10.1145/3360550 external_id: arxiv: - '1909.00989' file: - access_level: open_access checksum: 2149979c46964c4d117af06ccb6c0834 content_type: application/pdf creator: cchlebak date_created: 2021-11-12T11:41:56Z date_updated: 2021-11-12T11:41:56Z file_id: '10278' file_name: 2019_ACM_Chatterjee.pdf file_size: 570829 relation: main_file success: 1 file_date_updated: 2021-11-12T11:41:56Z has_accepted_license: '1' intvolume: ' 3' keyword: - safety - risk - reliability and quality - software language: - iso: eng month: '10' oa: 1 oa_version: Published Version project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25F5A88A-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11402-N23 name: Moderne Concurrency Paradigms publication: Proceedings of the 34th ACM International Conference on Object-Oriented Programming, Systems, Languages, and Applications publication_identifier: eissn: - 2475-1421 publication_status: published publisher: ACM quality_controlled: '1' related_material: record: - id: '10199' relation: dissertation_contains status: public scopus_import: '1' status: public title: Value-centric dynamic partial order reduction tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 3 year: '2019' ... --- _id: '10354' abstract: - lang: eng text: "Background\r\nESCRT-III is a membrane remodelling filament with the unique ability to cut membranes from the inside of the membrane neck. It is essential for the final stage of cell division, the formation of vesicles, the release of viruses, and membrane repair. Distinct from other cytoskeletal filaments, ESCRT-III filaments do not consume energy themselves, but work in conjunction with another ATP-consuming complex. Despite rapid progress in describing the cell biology of ESCRT-III, we lack an understanding of the physical mechanisms behind its force production and membrane remodelling.\r\nResults\r\nHere we present a minimal coarse-grained model that captures all the experimentally reported cases of ESCRT-III driven membrane sculpting, including the formation of downward and upward cones and tubules. This model suggests that a change in the geometry of membrane bound ESCRT-III filaments—from a flat spiral to a 3D helix—drives membrane deformation. We then show that such repetitive filament geometry transitions can induce the fission of cargo-containing vesicles.\r\nConclusions\r\nOur model provides a general physical mechanism that explains the full range of ESCRT-III-dependent membrane remodelling and scission events observed in cells. This mechanism for filament force production is distinct from the mechanisms described for other cytoskeletal elements discovered so far. The mechanistic principles revealed here suggest new ways of manipulating ESCRT-III-driven processes in cells and could be used to guide the engineering of synthetic membrane-sculpting systems." acknowledgement: We thank Jeremy Carlton, Mike Staddon, Geraint Harker, and the Wellcome Trust Consortium “Archaeal Origins of Eukaryotic Cell Organisation” for fruitful conversations. We thank Peter Wirnsberger and Tine Curk for discussions about the membrane model implementation. article_number: '82' article_processing_charge: No article_type: original author: - first_name: Lena full_name: Harker-Kirschneck, Lena last_name: Harker-Kirschneck - first_name: Buzz full_name: Baum, Buzz last_name: Baum - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 citation: ama: Harker-Kirschneck L, Baum B, Šarić A. Changes in ESCRT-III filament geometry drive membrane remodelling and fission in silico. BMC Biology. 2019;17(1). doi:10.1186/s12915-019-0700-2 apa: Harker-Kirschneck, L., Baum, B., & Šarić, A. (2019). Changes in ESCRT-III filament geometry drive membrane remodelling and fission in silico. BMC Biology. Springer Nature. https://doi.org/10.1186/s12915-019-0700-2 chicago: Harker-Kirschneck, Lena, Buzz Baum, and Anđela Šarić. “Changes in ESCRT-III Filament Geometry Drive Membrane Remodelling and Fission in Silico.” BMC Biology. Springer Nature, 2019. https://doi.org/10.1186/s12915-019-0700-2. ieee: L. Harker-Kirschneck, B. Baum, and A. Šarić, “Changes in ESCRT-III filament geometry drive membrane remodelling and fission in silico,” BMC Biology, vol. 17, no. 1. Springer Nature, 2019. ista: Harker-Kirschneck L, Baum B, Šarić A. 2019. Changes in ESCRT-III filament geometry drive membrane remodelling and fission in silico. BMC Biology. 17(1), 82. mla: Harker-Kirschneck, Lena, et al. “Changes in ESCRT-III Filament Geometry Drive Membrane Remodelling and Fission in Silico.” BMC Biology, vol. 17, no. 1, 82, Springer Nature, 2019, doi:10.1186/s12915-019-0700-2. short: L. Harker-Kirschneck, B. Baum, A. Šarić, BMC Biology 17 (2019). date_created: 2021-11-26T11:25:03Z date_published: 2019-10-22T00:00:00Z date_updated: 2021-11-26T11:54:29Z day: '22' ddc: - '570' doi: 10.1186/s12915-019-0700-2 extern: '1' external_id: pmid: - '31640700' file: - access_level: open_access checksum: 31d8bae55a376d30925f53f7e1a02396 content_type: application/pdf creator: cchlebak date_created: 2021-11-26T11:37:54Z date_updated: 2021-11-26T11:37:54Z file_id: '10356' file_name: 2019_BMCBio_Harker_Kirschneck.pdf file_size: 1648926 relation: main_file success: 1 file_date_updated: 2021-11-26T11:37:54Z has_accepted_license: '1' intvolume: ' 17' issue: '1' keyword: - cell biology language: - iso: eng main_file_link: - open_access: '1' url: https://www.biorxiv.org/content/10.1101/559898 month: '10' oa: 1 oa_version: Published Version pmid: 1 publication: BMC Biology publication_identifier: issn: - 1741-7007 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Changes in ESCRT-III filament geometry drive membrane remodelling and fission in silico tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 17 year: '2019' ... --- _id: '10355' abstract: - lang: eng text: The molecular machinery of life is largely created via self-organisation of individual molecules into functional assemblies. Minimal coarse-grained models, in which a whole macromolecule is represented by a small number of particles, can be of great value in identifying the main driving forces behind self-organisation in cell biology. Such models can incorporate data from both molecular and continuum scales, and their results can be directly compared to experiments. Here we review the state of the art of models for studying the formation and biological function of macromolecular assemblies in living organisms. We outline the key ingredients of each model and their main findings. We illustrate the contribution of this class of simulations to identifying the physical mechanisms behind life and diseases, and discuss their future developments. acknowledgement: We acknowledge funding from EPSRC (A.E.H. and A.Š.), the Academy of Medical Sciences (J.K. and A.Š.), the Wellcome Trust (J.K. and A.Š.), and the Royal Society (A.Š.). We thank Shiladitya Banerjee and Nikola Ojkic for critically reading the manuscript, and Claudia Flandoli for helping us with figures and illustrations. article_processing_charge: No article_type: original author: - first_name: Anne E full_name: Hafner, Anne E last_name: Hafner - first_name: Johannes full_name: Krausser, Johannes last_name: Krausser - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 citation: ama: Hafner AE, Krausser J, Šarić A. Minimal coarse-grained models for molecular self-organisation in biology. Current Opinion in Structural Biology. 2019;58:43-52. doi:10.1016/j.sbi.2019.05.018 apa: Hafner, A. E., Krausser, J., & Šarić, A. (2019). Minimal coarse-grained models for molecular self-organisation in biology. Current Opinion in Structural Biology. Elsevier. https://doi.org/10.1016/j.sbi.2019.05.018 chicago: Hafner, Anne E, Johannes Krausser, and Anđela Šarić. “Minimal Coarse-Grained Models for Molecular Self-Organisation in Biology.” Current Opinion in Structural Biology. Elsevier, 2019. https://doi.org/10.1016/j.sbi.2019.05.018. ieee: A. E. Hafner, J. Krausser, and A. Šarić, “Minimal coarse-grained models for molecular self-organisation in biology,” Current Opinion in Structural Biology, vol. 58. Elsevier, pp. 43–52, 2019. ista: Hafner AE, Krausser J, Šarić A. 2019. Minimal coarse-grained models for molecular self-organisation in biology. Current Opinion in Structural Biology. 58, 43–52. mla: Hafner, Anne E., et al. “Minimal Coarse-Grained Models for Molecular Self-Organisation in Biology.” Current Opinion in Structural Biology, vol. 58, Elsevier, 2019, pp. 43–52, doi:10.1016/j.sbi.2019.05.018. short: A.E. Hafner, J. Krausser, A. Šarić, Current Opinion in Structural Biology 58 (2019) 43–52. date_created: 2021-11-26T11:33:21Z date_published: 2019-06-18T00:00:00Z date_updated: 2021-11-26T11:54:25Z day: '18' doi: 10.1016/j.sbi.2019.05.018 extern: '1' external_id: pmid: - '31226513' intvolume: ' 58' keyword: - molecular biology - structural biology language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1906.09349 month: '06' oa: 1 oa_version: Preprint page: 43-52 pmid: 1 publication: Current Opinion in Structural Biology publication_identifier: issn: - 0959-440X publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Minimal coarse-grained models for molecular self-organisation in biology type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 58 year: '2019' ... --- _id: '105' abstract: - lang: eng text: 'Clinical Utility Gene Card. 1. Name of Disease (Synonyms): Pontocerebellar hypoplasia type 9 (PCH9) and spastic paraplegia-63 (SPG63). 2. OMIM# of the Disease: 615809 and 615686. 3. Name of the Analysed Genes or DNA/Chromosome Segments: AMPD2 at 1p13.3. 4. OMIM# of the Gene(s): 102771.' acknowledgement: 'This work was supported by EuroGentest2 (Unit 2: “Genetic testing as part of health care”), a Coordination Action under FP7 (Grant Agreement Number 261469) and the European Society of Human Genetics. We acknowledge the participation of the patients and their families in these studies, as well as the generous financial support of the Lefroy and Handbury families. APLM was supported by an Australian Postgraduate Award. PJL is supported by an NHMRC Career Development Fellowship (GNT1032364). RJL is supported by a Melbourne Children’s Clinician Scientist Fellowship.' article_processing_charge: No article_type: original author: - first_name: Ashley full_name: Marsh, Ashley last_name: Marsh - first_name: Gaia full_name: Novarino, Gaia id: 3E57A680-F248-11E8-B48F-1D18A9856A87 last_name: Novarino orcid: 0000-0002-7673-7178 - first_name: Paul full_name: Lockhart, Paul last_name: Lockhart - first_name: Richard full_name: Leventer, Richard last_name: Leventer citation: ama: Marsh A, Novarino G, Lockhart P, Leventer R. CUGC for pontocerebellar hypoplasia type 9 and spastic paraplegia-63. European Journal of Human Genetics. 2019;27:161-166. doi:10.1038/s41431-018-0231-2 apa: Marsh, A., Novarino, G., Lockhart, P., & Leventer, R. (2019). CUGC for pontocerebellar hypoplasia type 9 and spastic paraplegia-63. European Journal of Human Genetics. Springer Nature. https://doi.org/10.1038/s41431-018-0231-2 chicago: Marsh, Ashley, Gaia Novarino, Paul Lockhart, and Richard Leventer. “CUGC for Pontocerebellar Hypoplasia Type 9 and Spastic Paraplegia-63.” European Journal of Human Genetics. Springer Nature, 2019. https://doi.org/10.1038/s41431-018-0231-2. ieee: A. Marsh, G. Novarino, P. Lockhart, and R. Leventer, “CUGC for pontocerebellar hypoplasia type 9 and spastic paraplegia-63,” European Journal of Human Genetics, vol. 27. Springer Nature, pp. 161–166, 2019. ista: Marsh A, Novarino G, Lockhart P, Leventer R. 2019. CUGC for pontocerebellar hypoplasia type 9 and spastic paraplegia-63. European Journal of Human Genetics. 27, 161–166. mla: Marsh, Ashley, et al. “CUGC for Pontocerebellar Hypoplasia Type 9 and Spastic Paraplegia-63.” European Journal of Human Genetics, vol. 27, Springer Nature, 2019, pp. 161–66, doi:10.1038/s41431-018-0231-2. short: A. Marsh, G. Novarino, P. Lockhart, R. Leventer, European Journal of Human Genetics 27 (2019) 161–166. date_created: 2018-12-11T11:44:39Z date_published: 2019-01-01T00:00:00Z date_updated: 2026-06-18T08:42:55Z day: '01' ddc: - '570' department: - _id: GaNo doi: 10.1038/s41431-018-0231-2 external_id: isi: - '000454111500019' pmid: - '30089829' intvolume: ' 27' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1038/s41431-018-0231-2 month: '01' oa: 1 oa_version: Published Version page: 161-166 pmid: 1 publication: European Journal of Human Genetics publication_status: published publisher: Springer Nature publist_id: '7949' quality_controlled: '1' scopus_import: '1' status: public title: CUGC for pontocerebellar hypoplasia type 9 and spastic paraplegia-63 type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 27 year: '2019' ... --- _id: '10619' abstract: - lang: eng text: The quantum anomalous Hall (QAH) effect combines topology and magnetism to produce precisely quantized Hall resistance at zero magnetic field. We report the observation of a QAH effect in twisted bilayer graphene aligned to hexagonal boron nitride. The effect is driven by intrinsic strong interactions, which polarize the electrons into a single spin- and valley-resolved moiré miniband with Chern number C = 1. In contrast to magnetically doped systems, the measured transport energy gap is larger than the Curie temperature for magnetic ordering, and quantization to within 0.1% of the von Klitzing constant persists to temperatures of several kelvin at zero magnetic field. Electrical currents as small as 1 nanoampere controllably switch the magnetic order between states of opposite polarization, forming an electrically rewritable magnetic memory. acknowledgement: The authors acknowledge discussions with A. Macdonald, Y. Saito, and M. Zaletel. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: M. full_name: Serlin, M. last_name: Serlin - first_name: C. L. full_name: Tschirhart, C. L. last_name: Tschirhart - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Y. full_name: Zhang, Y. last_name: Zhang - first_name: J. full_name: Zhu, J. last_name: Zhu - first_name: K. full_name: Watanabe, K. last_name: Watanabe - first_name: T. full_name: Taniguchi, T. last_name: Taniguchi - first_name: L. full_name: Balents, L. last_name: Balents - first_name: A. F. full_name: Young, A. F. last_name: Young citation: ama: Serlin M, Tschirhart CL, Polshyn H, et al. Intrinsic quantized anomalous Hall effect in a moiré heterostructure. Science. 2019;367(6480):900-903. doi:10.1126/science.aay5533 apa: Serlin, M., Tschirhart, C. L., Polshyn, H., Zhang, Y., Zhu, J., Watanabe, K., … Young, A. F. (2019). Intrinsic quantized anomalous Hall effect in a moiré heterostructure. Science. American Association for the Advancement of Science. https://doi.org/10.1126/science.aay5533 chicago: Serlin, M., C. L. Tschirhart, Hryhoriy Polshyn, Y. Zhang, J. Zhu, K. Watanabe, T. Taniguchi, L. Balents, and A. F. Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure.” Science. American Association for the Advancement of Science, 2019. https://doi.org/10.1126/science.aay5533. ieee: M. Serlin et al., “Intrinsic quantized anomalous Hall effect in a moiré heterostructure,” Science, vol. 367, no. 6480. American Association for the Advancement of Science, pp. 900–903, 2019. ista: Serlin M, Tschirhart CL, Polshyn H, Zhang Y, Zhu J, Watanabe K, Taniguchi T, Balents L, Young AF. 2019. Intrinsic quantized anomalous Hall effect in a moiré heterostructure. Science. 367(6480), 900–903. mla: Serlin, M., et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure.” Science, vol. 367, no. 6480, American Association for the Advancement of Science, 2019, pp. 900–03, doi:10.1126/science.aay5533. short: M. Serlin, C.L. Tschirhart, H. Polshyn, Y. Zhang, J. Zhu, K. Watanabe, T. Taniguchi, L. Balents, A.F. Young, Science 367 (2019) 900–903. date_created: 2022-01-13T14:21:32Z date_published: 2019-12-19T00:00:00Z date_updated: 2023-02-21T16:00:09Z day: '19' doi: 10.1126/science.aay5533 extern: '1' external_id: arxiv: - '1907.00261' pmid: - '31857492' intvolume: ' 367' issue: '6480' keyword: - multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1907.00261 month: '12' oa: 1 oa_version: Preprint page: 900-903 pmid: 1 publication: Science publication_identifier: eissn: - 1095-9203 issn: - 0036-8075 publication_status: published publisher: American Association for the Advancement of Science quality_controlled: '1' related_material: record: - id: '10697' relation: other status: public - id: '10698' relation: other status: public - id: '10699' relation: other status: public scopus_import: '1' status: public title: Intrinsic quantized anomalous Hall effect in a moiré heterostructure type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 367 year: '2019' ... --- _id: '10620' abstract: - lang: eng text: Partially filled Landau levels host competing electronic orders. For example, electron solids may prevail close to integer filling of the Landau levels before giving way to fractional quantum Hall liquids at higher carrier density1,2. Here, we report the observation of an electron solid with non-collinear spin texture in monolayer graphene, consistent with solidification of skyrmions3—topological spin textures characterized by quantized electrical charge4,5. We probe the spin texture of the solids using a modified Corbino geometry that allows ferromagnetic magnons to be launched and detected6,7. We find that magnon transport is highly efficient when one Landau level is filled (ν=1), consistent with quantum Hall ferromagnetic spin polarization. However, even minimal doping immediately quenches the magnon signal while leaving the vanishing low-temperature charge conductivity unchanged. Our results can be understood by the formation of a solid of charged skyrmions near ν=1, whose non-collinear spin texture leads to rapid magnon decay. Data near fractional fillings show evidence of several fractional skyrmion solids, suggesting that graphene hosts a highly tunable landscape of coupled spin and charge orders. acknowledgement: We acknowledge discussions with B. Halperin, C. Huang, A. Macdonald and M. Zalatel. Experimental work at UCSB was supported by the Army Research Office under awards nos. MURI W911NF-16-1-0361 and W911NF-16-1-0482. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by MEXT (Japan) and CREST (JPMJCR15F3), JST. A.F.Y. acknowledges the support of the David and Lucile Packard Foundation and and Alfred. P. Sloan Foundation. article_processing_charge: No article_type: original author: - first_name: H. full_name: Zhou, H. last_name: Zhou - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: T. full_name: Taniguchi, T. last_name: Taniguchi - first_name: K. full_name: Watanabe, K. last_name: Watanabe - first_name: A. F. full_name: Young, A. F. last_name: Young citation: ama: Zhou H, Polshyn H, Taniguchi T, Watanabe K, Young AF. Solids of quantum Hall skyrmions in graphene. Nature Physics. 2019;16(2):154-158. doi:10.1038/s41567-019-0729-8 apa: Zhou, H., Polshyn, H., Taniguchi, T., Watanabe, K., & Young, A. F. (2019). Solids of quantum Hall skyrmions in graphene. Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-019-0729-8 chicago: Zhou, H., Hryhoriy Polshyn, T. Taniguchi, K. Watanabe, and A. F. Young. “Solids of Quantum Hall Skyrmions in Graphene.” Nature Physics. Springer Nature, 2019. https://doi.org/10.1038/s41567-019-0729-8. ieee: H. Zhou, H. Polshyn, T. Taniguchi, K. Watanabe, and A. F. Young, “Solids of quantum Hall skyrmions in graphene,” Nature Physics, vol. 16, no. 2. Springer Nature, pp. 154–158, 2019. ista: Zhou H, Polshyn H, Taniguchi T, Watanabe K, Young AF. 2019. Solids of quantum Hall skyrmions in graphene. Nature Physics. 16(2), 154–158. mla: Zhou, H., et al. “Solids of Quantum Hall Skyrmions in Graphene.” Nature Physics, vol. 16, no. 2, Springer Nature, 2019, pp. 154–58, doi:10.1038/s41567-019-0729-8. short: H. Zhou, H. Polshyn, T. Taniguchi, K. Watanabe, A.F. Young, Nature Physics 16 (2019) 154–158. date_created: 2022-01-13T14:45:16Z date_published: 2019-12-16T00:00:00Z date_updated: 2022-01-13T15:34:44Z day: '16' doi: 10.1038/s41567-019-0729-8 extern: '1' intvolume: ' 16' issue: '2' keyword: - General Physics and Astronomy language: - iso: eng month: '12' oa_version: None page: 154-158 publication: Nature Physics publication_identifier: eissn: - 1745-2481 issn: - 1745-2473 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Solids of quantum Hall skyrmions in graphene type: journal_article user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17 volume: 16 year: '2019' ... --- _id: '10621' abstract: - lang: eng text: Twisted bilayer graphene has recently emerged as a platform for hosting correlated phenomena. For twist angles near θ ≈ 1.1°, the low-energy electronic structure of twisted bilayer graphene features isolated bands with a flat dispersion1,2. Recent experiments have observed a variety of low-temperature phases that appear to be driven by electron interactions, including insulating states, superconductivity and magnetism3,4,5,6. Here we report electrical transport measurements up to room temperature for twist angles varying between 0.75° and 2°. We find that the resistivity, ρ, scales linearly with temperature, T, over a wide range of T before falling again owing to interband activation. The T-linear response is much larger than observed in monolayer graphene for all measured devices, and in particular increases by more than three orders of magnitude in the range where the flat band exists. Our results point to the dominant role of electron–phonon scattering in twisted bilayer graphene, with possible implications for the origin of the observed superconductivity. acknowledgement: The authors thank S. Das Sarma and F. Wu for sharing their unpublished theoretical results, and acknowledge further discussions with L. Balents and T. Senthil. Work at both Columbia and UCSB was funded by the Army Research Office under award W911NF-17-1-0323. Sample device design and fabrication was partially supported by DoE Pro-QM EFRC (DE-SC0019443). A.F.Y. and C.R.D. separately acknowledge the support of the David and Lucile Packard Foundation. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan and the CREST (JPMJCR15F3), JST. A portion of this work was carried out at the KITP, Santa Barbara, supported by the National Science Foundation under grant number NSF PHY-1748958. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Matthew full_name: Yankowitz, Matthew last_name: Yankowitz - first_name: Shaowen full_name: Chen, Shaowen last_name: Chen - first_name: Yuxuan full_name: Zhang, Yuxuan last_name: Zhang - first_name: K. full_name: Watanabe, K. last_name: Watanabe - first_name: T. full_name: Taniguchi, T. last_name: Taniguchi - first_name: Cory R. full_name: Dean, Cory R. last_name: Dean - first_name: Andrea F. full_name: Young, Andrea F. last_name: Young citation: ama: Polshyn H, Yankowitz M, Chen S, et al. Large linear-in-temperature resistivity in twisted bilayer graphene. Nature Physics. 2019;15(10):1011-1016. doi:10.1038/s41567-019-0596-3 apa: Polshyn, H., Yankowitz, M., Chen, S., Zhang, Y., Watanabe, K., Taniguchi, T., … Young, A. F. (2019). Large linear-in-temperature resistivity in twisted bilayer graphene. Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-019-0596-3 chicago: Polshyn, Hryhoriy, Matthew Yankowitz, Shaowen Chen, Yuxuan Zhang, K. Watanabe, T. Taniguchi, Cory R. Dean, and Andrea F. Young. “Large Linear-in-Temperature Resistivity in Twisted Bilayer Graphene.” Nature Physics. Springer Nature, 2019. https://doi.org/10.1038/s41567-019-0596-3. ieee: H. Polshyn et al., “Large linear-in-temperature resistivity in twisted bilayer graphene,” Nature Physics, vol. 15, no. 10. Springer Nature, pp. 1011–1016, 2019. ista: Polshyn H, Yankowitz M, Chen S, Zhang Y, Watanabe K, Taniguchi T, Dean CR, Young AF. 2019. Large linear-in-temperature resistivity in twisted bilayer graphene. Nature Physics. 15(10), 1011–1016. mla: Polshyn, Hryhoriy, et al. “Large Linear-in-Temperature Resistivity in Twisted Bilayer Graphene.” Nature Physics, vol. 15, no. 10, Springer Nature, 2019, pp. 1011–16, doi:10.1038/s41567-019-0596-3. short: H. Polshyn, M. Yankowitz, S. Chen, Y. Zhang, K. Watanabe, T. Taniguchi, C.R. Dean, A.F. Young, Nature Physics 15 (2019) 1011–1016. date_created: 2022-01-13T15:00:58Z date_published: 2019-08-05T00:00:00Z date_updated: 2022-01-20T09:33:38Z day: '05' doi: 10.1038/s41567-019-0596-3 extern: '1' external_id: arxiv: - '1902.00763' intvolume: ' 15' issue: '10' keyword: - general physics and astronomy language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1902.00763 month: '08' oa: 1 oa_version: Preprint page: 1011-1016 publication: Nature Physics publication_identifier: eissn: - 1745-2481 issn: - 1745-2473 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Large linear-in-temperature resistivity in twisted bilayer graphene type: journal_article user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17 volume: 15 year: '2019' ... --- _id: '10622' abstract: - lang: eng text: We demonstrate a method for manipulating small ensembles of vortices in multiply connected superconducting structures. A micron-size magnetic particle attached to the tip of a silicon cantilever is used to locally apply magnetic flux through the superconducting structure. By scanning the tip over the surface of the device and by utilizing the dynamical coupling between the vortices and the cantilever, a high-resolution spatial map of the different vortex configurations is obtained. Moving the tip to a particular location in the map stabilizes a distinct multivortex configuration. Thus, the scanning of the tip over a particular trajectory in space permits nontrivial operations to be performed, such as braiding of individual vortices within a larger vortex ensemble—a key capability required by many proposals for topological quantum computing. acknowledgement: We are grateful to Nadya Mason, Taylor Hughes, and Alexey Bezryadin for useful discussions. This work was supported by the DOE Basic Energy Sciences under DE-SC0012649 and the Department of Physics and the Frederick Seitz Materials Research Laboratory Central Facilities at the University of Illinois. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Tyler full_name: Naibert, Tyler last_name: Naibert - first_name: Raffi full_name: Budakian, Raffi last_name: Budakian citation: ama: Polshyn H, Naibert T, Budakian R. Manipulating multivortex states in superconducting structures. Nano Letters. 2019;19(8):5476-5482. doi:10.1021/acs.nanolett.9b01983 apa: Polshyn, H., Naibert, T., & Budakian, R. (2019). Manipulating multivortex states in superconducting structures. Nano Letters. American Chemical Society. https://doi.org/10.1021/acs.nanolett.9b01983 chicago: Polshyn, Hryhoriy, Tyler Naibert, and Raffi Budakian. “Manipulating Multivortex States in Superconducting Structures.” Nano Letters. American Chemical Society, 2019. https://doi.org/10.1021/acs.nanolett.9b01983. ieee: H. Polshyn, T. Naibert, and R. Budakian, “Manipulating multivortex states in superconducting structures,” Nano Letters, vol. 19, no. 8. American Chemical Society, pp. 5476–5482, 2019. ista: Polshyn H, Naibert T, Budakian R. 2019. Manipulating multivortex states in superconducting structures. Nano Letters. 19(8), 5476–5482. mla: Polshyn, Hryhoriy, et al. “Manipulating Multivortex States in Superconducting Structures.” Nano Letters, vol. 19, no. 8, American Chemical Society, 2019, pp. 5476–82, doi:10.1021/acs.nanolett.9b01983. short: H. Polshyn, T. Naibert, R. Budakian, Nano Letters 19 (2019) 5476–5482. date_created: 2022-01-13T15:11:14Z date_published: 2019-06-27T00:00:00Z date_updated: 2022-01-13T15:41:24Z day: '27' doi: 10.1021/acs.nanolett.9b01983 extern: '1' external_id: arxiv: - '1905.06303' pmid: - '31246034' intvolume: ' 19' issue: '8' keyword: - mechanical engineering - condensed matter physics - general materials science - general chemistry - bioengineering language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1905.06303 month: '06' oa: 1 oa_version: Preprint page: 5476-5482 pmid: 1 publication: Nano Letters publication_identifier: eissn: - 1530-6992 issn: - 1530-6984 publication_status: published publisher: American Chemical Society quality_controlled: '1' scopus_import: '1' status: public title: Manipulating multivortex states in superconducting structures type: journal_article user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17 volume: 19 year: '2019' ... --- _id: '10625' abstract: - lang: eng text: The discovery of superconductivity and exotic insulating phases in twisted bilayer graphene has established this material as a model system of strongly correlated electrons. To achieve superconductivity, the two layers of graphene need to be at a very precise angle with respect to each other. Yankowitz et al. now show that another experimental knob, hydrostatic pressure, can be used to tune the phase diagram of twisted bilayer graphene (see the Perspective by Feldman). Applying pressure increased the coupling between the layers, which shifted the superconducting transition to higher angles and somewhat higher temperatures. acknowledgement: We thank J. Zhu and H. Zhou for experimental assistance and D. Shahar, A. Millis, O. Vafek, M. Zaletel, L. Balents, C. Xu, A. Bernevig, L. Fu, M. Koshino, and P. Moon for helpful discussions. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Matthew full_name: Yankowitz, Matthew last_name: Yankowitz - first_name: Shaowen full_name: Chen, Shaowen last_name: Chen - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Yuxuan full_name: Zhang, Yuxuan last_name: Zhang - first_name: K. full_name: Watanabe, K. last_name: Watanabe - first_name: T. full_name: Taniguchi, T. last_name: Taniguchi - first_name: David full_name: Graf, David last_name: Graf - first_name: Andrea F. full_name: Young, Andrea F. last_name: Young - first_name: Cory R. full_name: Dean, Cory R. last_name: Dean citation: ama: Yankowitz M, Chen S, Polshyn H, et al. Tuning superconductivity in twisted bilayer graphene. Science. 2019;363(6431):1059-1064. doi:10.1126/science.aav1910 apa: Yankowitz, M., Chen, S., Polshyn, H., Zhang, Y., Watanabe, K., Taniguchi, T., … Dean, C. R. (2019). Tuning superconductivity in twisted bilayer graphene. Science. American Association for the Advancement of Science (AAAS). https://doi.org/10.1126/science.aav1910 chicago: Yankowitz, Matthew, Shaowen Chen, Hryhoriy Polshyn, Yuxuan Zhang, K. Watanabe, T. Taniguchi, David Graf, Andrea F. Young, and Cory R. Dean. “Tuning Superconductivity in Twisted Bilayer Graphene.” Science. American Association for the Advancement of Science (AAAS), 2019. https://doi.org/10.1126/science.aav1910. ieee: M. Yankowitz et al., “Tuning superconductivity in twisted bilayer graphene,” Science, vol. 363, no. 6431. American Association for the Advancement of Science (AAAS), pp. 1059–1064, 2019. ista: Yankowitz M, Chen S, Polshyn H, Zhang Y, Watanabe K, Taniguchi T, Graf D, Young AF, Dean CR. 2019. Tuning superconductivity in twisted bilayer graphene. Science. 363(6431), 1059–1064. mla: Yankowitz, Matthew, et al. “Tuning Superconductivity in Twisted Bilayer Graphene.” Science, vol. 363, no. 6431, American Association for the Advancement of Science (AAAS), 2019, pp. 1059–64, doi:10.1126/science.aav1910. short: M. Yankowitz, S. Chen, H. Polshyn, Y. Zhang, K. Watanabe, T. Taniguchi, D. Graf, A.F. Young, C.R. Dean, Science 363 (2019) 1059–1064. date_created: 2022-01-14T12:14:58Z date_published: 2019-01-24T00:00:00Z date_updated: 2022-01-14T13:48:32Z day: '24' doi: 10.1126/science.aav1910 extern: '1' external_id: arxiv: - '1808.07865' pmid: - '30679385 ' intvolume: ' 363' issue: '6431' keyword: - multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1808.07865 month: '01' oa: 1 oa_version: Preprint page: 1059-1064 pmid: 1 publication: Science publication_identifier: eissn: - 1095-9203 issn: - 0036-8075 publication_status: published publisher: American Association for the Advancement of Science (AAAS) quality_controlled: '1' scopus_import: '1' status: public title: Tuning superconductivity in twisted bilayer graphene type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 363 year: '2019' ... --- _id: '10664' abstract: - lang: eng text: "Since the discovery of correlated insulators and superconductivity in magic-angle twisted bilayer graphene (tBLG) ([1, 2], JCCM April 2018), theorists have been excitedly pursuing the alluring mix of band topology, symmetry breaking, Mott insulators and superconductivity at play, as well as the potential relation (if any) to high-Tc physics. Now a new stream\r\nof experimental work is arriving which further enriches the story. To briefly recap Episodes 1 and 2 (JCCM April and November 2018), when two graphene layers are stacked with a small rotational mismatch θ, the resulting long-wavelength moire pattern leads to a superlattice potential which reconstructs the low energy band structure. When θ approaches the “magic-angle” θM ∼ 1 ◦, the band structure features eight nearly-flat bands which fill when the electron number per moire unit cell, n/n0, lies between −4 < n/n0 < 4. The bands can be counted as 8 = 2 × 2 × 2: for each spin (2×) and valley (2×) characteristic of monolayergraphene, tBLG has has 2× flat bands which cross at mini-Dirac points." article_processing_charge: No article_type: original author: - first_name: Mathew full_name: Yankowitz, Mathew last_name: Yankowitz - first_name: Shaowen full_name: Chen, Shaowen last_name: Chen - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: K. full_name: Watanabe, K. last_name: Watanabe - first_name: T. full_name: Taniguchi, T. last_name: Taniguchi - first_name: David full_name: Graf, David last_name: Graf - first_name: Andrea F. full_name: Young, Andrea F. last_name: Young - first_name: Cory R. full_name: Dean, Cory R. last_name: Dean - first_name: Aaron L. full_name: Sharpe, Aaron L. last_name: Sharpe - first_name: E.J. full_name: Fox, E.J. last_name: Fox - first_name: A.W. full_name: Barnard, A.W. last_name: Barnard - first_name: Joe full_name: Finney, Joe last_name: Finney citation: ama: Yankowitz M, Chen S, Polshyn H, et al. New correlated phenomena in magic-angle twisted bilayer graphene/s. Journal Club for Condensed Matter Physics. 2019;03. doi:10.36471/jccm_february_2019_03 apa: Yankowitz, M., Chen, S., Polshyn, H., Watanabe, K., Taniguchi, T., Graf, D., … Finney, J. (2019). New correlated phenomena in magic-angle twisted bilayer graphene/s. Journal Club for Condensed Matter Physics. Simons Foundation ; University of California, Riverside. https://doi.org/10.36471/jccm_february_2019_03 chicago: Yankowitz, Mathew, Shaowen Chen, Hryhoriy Polshyn, K. Watanabe, T. Taniguchi, David Graf, Andrea F. Young, et al. “New Correlated Phenomena in Magic-Angle Twisted Bilayer Graphene/S.” Journal Club for Condensed Matter Physics. Simons Foundation ; University of California, Riverside, 2019. https://doi.org/10.36471/jccm_february_2019_03. ieee: M. Yankowitz et al., “New correlated phenomena in magic-angle twisted bilayer graphene/s,” Journal Club for Condensed Matter Physics, vol. 03. Simons Foundation ; University of California, Riverside, 2019. ista: Yankowitz M, Chen S, Polshyn H, Watanabe K, Taniguchi T, Graf D, Young AF, Dean CR, Sharpe AL, Fox EJ, Barnard AW, Finney J. 2019. New correlated phenomena in magic-angle twisted bilayer graphene/s. Journal Club for Condensed Matter Physics. 03. mla: Yankowitz, Mathew, et al. “New Correlated Phenomena in Magic-Angle Twisted Bilayer Graphene/S.” Journal Club for Condensed Matter Physics, vol. 03, Simons Foundation ; University of California, Riverside, 2019, doi:10.36471/jccm_february_2019_03. short: M. Yankowitz, S. Chen, H. Polshyn, K. Watanabe, T. Taniguchi, D. Graf, A.F. Young, C.R. Dean, A.L. Sharpe, E.J. Fox, A.W. Barnard, J. Finney, Journal Club for Condensed Matter Physics 03 (2019). date_created: 2022-01-25T15:09:58Z date_published: 2019-02-28T00:00:00Z date_updated: 2025-01-14T14:28:17Z day: '28' doi: 10.36471/jccm_february_2019_03 extern: '1' intvolume: ' 3' language: - iso: eng main_file_link: - open_access: '1' url: https://www.condmatjclub.org/?p=3541 month: '02' oa: 1 oa_version: Published Version publication: Journal Club for Condensed Matter Physics publication_status: published publisher: Simons Foundation ; University of California, Riverside quality_controlled: '1' status: public title: New correlated phenomena in magic-angle twisted bilayer graphene/s type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: '03' year: '2019' ... --- _id: '10722' abstract: - lang: eng text: Bilayer graphene, rotationally faulted to ~1.1 degree misalignment, has recently been shown to host superconducting and resistive states associated with the formation of a flat electronic band. While numerous theories exist for the origins of both states, direct validation of these theories remains an outstanding experimental problem. Here, we focus on the resistive states occurring at commensurate filling (1/2, 1/4, and 3/4) of the two lowest superlattice bands. We test theoretical proposals that these states arise due to broken spin—and/or valley—symmetry by performing direct magnetic imaging with nanoscale SQUID-on-tip microscopy. This technique provides single-spin resolved magnetometry on sub-100nm length scales. I will present imaging data from our 4.2K nSOT microscope on graphite-gated twisted bilayers near the flat band condition and discuss the implications for the physics of the commensurate resistive states. alternative_title: - Bulletin of the American Physical Society article_number: L14.00006 article_processing_charge: No author: - first_name: Marec full_name: Serlin, Marec last_name: Serlin - first_name: Charles full_name: Tschirhart, Charles last_name: Tschirhart - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Jiacheng full_name: Zhu, Jiacheng last_name: Zhu - first_name: Martin E. full_name: Huber, Martin E. last_name: Huber - first_name: Andrea full_name: Young, Andrea last_name: Young citation: ama: 'Serlin M, Tschirhart C, Polshyn H, Zhu J, Huber ME, Young A. Direct Imaging of magnetic structure in twisted bilayer graphene with scanning nanoSQUID-On-Tip microscopy. In: APS March Meeting 2019. Vol 64. American Physical Society; 2019.' apa: 'Serlin, M., Tschirhart, C., Polshyn, H., Zhu, J., Huber, M. E., & Young, A. (2019). Direct Imaging of magnetic structure in twisted bilayer graphene with scanning nanoSQUID-On-Tip microscopy. In APS March Meeting 2019 (Vol. 64). Boston, MA, United States: American Physical Society.' chicago: Serlin, Marec, Charles Tschirhart, Hryhoriy Polshyn, Jiacheng Zhu, Martin E. Huber, and Andrea Young. “Direct Imaging of Magnetic Structure in Twisted Bilayer Graphene with Scanning NanoSQUID-On-Tip Microscopy.” In APS March Meeting 2019, Vol. 64. American Physical Society, 2019. ieee: M. Serlin, C. Tschirhart, H. Polshyn, J. Zhu, M. E. Huber, and A. Young, “Direct Imaging of magnetic structure in twisted bilayer graphene with scanning nanoSQUID-On-Tip microscopy,” in APS March Meeting 2019, Boston, MA, United States, 2019, vol. 64, no. 2. ista: 'Serlin M, Tschirhart C, Polshyn H, Zhu J, Huber ME, Young A. 2019. Direct Imaging of magnetic structure in twisted bilayer graphene with scanning nanoSQUID-On-Tip microscopy. APS March Meeting 2019. APS: American Physical Society, Bulletin of the American Physical Society, vol. 64, L14.00006.' mla: Serlin, Marec, et al. “Direct Imaging of Magnetic Structure in Twisted Bilayer Graphene with Scanning NanoSQUID-On-Tip Microscopy.” APS March Meeting 2019, vol. 64, no. 2, L14.00006, American Physical Society, 2019. short: M. Serlin, C. Tschirhart, H. Polshyn, J. Zhu, M.E. Huber, A. Young, in:, APS March Meeting 2019, American Physical Society, 2019. conference: end_date: 2019-03-08 location: Boston, MA, United States name: 'APS: American Physical Society' start_date: 2019-03-04 date_created: 2022-02-04T11:54:21Z date_published: 2019-03-01T00:00:00Z date_updated: 2022-02-08T10:25:30Z day: '01' extern: '1' intvolume: ' 64' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://meetings.aps.org/Meeting/MAR19/Session/L14.6 month: '03' oa: 1 oa_version: Published Version publication: APS March Meeting 2019 publication_identifier: issn: - 0003-0503 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Direct Imaging of magnetic structure in twisted bilayer graphene with scanning nanoSQUID-On-Tip microscopy type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 64 year: '2019' ... --- _id: '10723' abstract: - lang: eng text: In monolayer graphene, the interplay of electronic correlations with the internal spin- and valley- degrees of freedom leads to a complex phase diagram of isospin symmetry breaking at high magnetic fields. Recently, Wei et al. (Science (2018)) demonstrated that spin waves can be electrically generated and detected in graphene heterojunctions, allowing direct experiment access to the spin degree of freedom. Here, we apply this technique to high quality graphite-gated graphene devices showing robust fractional quantum Hall phases and isospin phase transitions. We use an edgeless Corbino geometry to eliminate the contributions of edge states to the spin-wave mediated nonlocal voltage, allowing unambiguous identification of spin wave transport signatures. Our data reveal two phases within the ν = 1 plateau. For exactly ν=1, charge is localized but spin waves propagate freely while small carrier doping completely quenches the low-energy spin-wave transport, even as those charges remain localized. We identify this new phase as a spin textured electron solid. We also find that spin-wave transport is modulated by phase transitions in the valley order that preserve spin polarization, suggesting that this technique is sensitive to both spin and valley order. article_number: P01.00004 article_processing_charge: No author: - first_name: Haoxin full_name: Zhou, Haoxin last_name: Zhou - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Takashi full_name: Tanaguchi, Takashi last_name: Tanaguchi - first_name: Kenji full_name: Watanabe, Kenji last_name: Watanabe - first_name: Andrea full_name: Young, Andrea last_name: Young citation: ama: 'Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. Spin wave transport through electron solids and fractional quantum Hall liquids in graphene. In: APS March Meeting 2019. Vol 64. American Physical Society; 2019.' apa: 'Zhou, H., Polshyn, H., Tanaguchi, T., Watanabe, K., & Young, A. (2019). Spin wave transport through electron solids and fractional quantum Hall liquids in graphene. In APS March Meeting 2019 (Vol. 64). Boston, MA, United States: American Physical Society.' chicago: Zhou, Haoxin, Hryhoriy Polshyn, Takashi Tanaguchi, Kenji Watanabe, and Andrea Young. “Spin Wave Transport through Electron Solids and Fractional Quantum Hall Liquids in Graphene.” In APS March Meeting 2019, Vol. 64. American Physical Society, 2019. ieee: H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, and A. Young, “Spin wave transport through electron solids and fractional quantum Hall liquids in graphene,” in APS March Meeting 2019, Boston, MA, United States, 2019, vol. 64, no. 2. ista: 'Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. 2019. Spin wave transport through electron solids and fractional quantum Hall liquids in graphene. APS March Meeting 2019. APS: American Physical Society vol. 64, P01.00004.' mla: Zhou, Haoxin, et al. “Spin Wave Transport through Electron Solids and Fractional Quantum Hall Liquids in Graphene.” APS March Meeting 2019, vol. 64, no. 2, P01.00004, American Physical Society, 2019. short: H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, A. Young, in:, APS March Meeting 2019, American Physical Society, 2019. conference: end_date: 2019-03-08 location: Boston, MA, United States name: 'APS: American Physical Society' start_date: 2019-03-04 date_created: 2022-02-04T12:14:02Z date_published: 2019-03-01T00:00:00Z date_updated: 2022-02-04T13:59:47Z day: '01' extern: '1' intvolume: ' 64' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://meetings.aps.org/Meeting/MAR19/Session/P01.4 month: '03' oa: 1 oa_version: Published Version publication: APS March Meeting 2019 publication_identifier: issn: - 0003-0503 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Spin wave transport through electron solids and fractional quantum Hall liquids in graphene type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 64 year: '2019' ... --- _id: '10724' abstract: - lang: eng text: Twisted bilayer graphene (tBLG) near the flat band condition is a versatile new platform for the study of correlated physics in 2D. Resistive states have been observed at several commensurate fillings of the flat miniband, along with superconducting states near half filling. To better understand the electronic structure of this system, we study electronic transport of graphite gated superconducting tBLG devices in the normal regime. At high magnetic fields, we observe full lifting of the spin and valley degeneracy. The transitions in the splitting of this four-fold degeneracy as a function of carrier density indicate Landau level (LL) crossings, which tilted field measurements show occur between LLs with different valley polarization. Similar LL structure measured in two devices, one with twist angle θ=1.08° at ambient pressure and one at θ=1.27° and 1.33GPa, suggests that the dimensionless combination of twist angle and interlayer coupling controls the relevant details of the band structure. In addition, we find that the temperature dependence of the resistance at B=0 shows linear growth at several hundred Ohm/K in a broad range of temperatures. We discuss the implications for modeling the scattering processes in this system. alternative_title: - Bulletin of the American Physical Society article_number: V14.00008 article_processing_charge: No author: - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Yuxuan full_name: Zhang, Yuxuan last_name: Zhang - first_name: Matthew full_name: Yankowitz, Matthew last_name: Yankowitz - first_name: Shaowen full_name: Chen, Shaowen last_name: Chen - first_name: Takashi full_name: Taniguchi, Takashi last_name: Taniguchi - first_name: Kenji full_name: Watanabe, Kenji last_name: Watanabe - first_name: David E. full_name: Graf, David E. last_name: Graf - first_name: Cory R. full_name: Dean, Cory R. last_name: Dean - first_name: Andrea full_name: Young, Andrea last_name: Young citation: ama: 'Polshyn H, Zhang Y, Yankowitz M, et al. Normal state transport in superconducting twisted bilayer graphene. In: APS March Meeting 2019. Vol 64. American Physical Society; 2019.' apa: 'Polshyn, H., Zhang, Y., Yankowitz, M., Chen, S., Taniguchi, T., Watanabe, K., … Young, A. (2019). Normal state transport in superconducting twisted bilayer graphene. In APS March Meeting 2019 (Vol. 64). Boston, MA, United States: American Physical Society.' chicago: Polshyn, Hryhoriy, Yuxuan Zhang, Matthew Yankowitz, Shaowen Chen, Takashi Taniguchi, Kenji Watanabe, David E. Graf, Cory R. Dean, and Andrea Young. “Normal State Transport in Superconducting Twisted Bilayer Graphene.” In APS March Meeting 2019, Vol. 64. American Physical Society, 2019. ieee: H. Polshyn et al., “Normal state transport in superconducting twisted bilayer graphene,” in APS March Meeting 2019, Boston, MA, United States, 2019, vol. 64, no. 2. ista: 'Polshyn H, Zhang Y, Yankowitz M, Chen S, Taniguchi T, Watanabe K, Graf DE, Dean CR, Young A. 2019. Normal state transport in superconducting twisted bilayer graphene. APS March Meeting 2019. APS: American Physical Society, Bulletin of the American Physical Society, vol. 64, V14.00008.' mla: Polshyn, Hryhoriy, et al. “Normal State Transport in Superconducting Twisted Bilayer Graphene.” APS March Meeting 2019, vol. 64, no. 2, V14.00008, American Physical Society, 2019. short: H. Polshyn, Y. Zhang, M. Yankowitz, S. Chen, T. Taniguchi, K. Watanabe, D.E. Graf, C.R. Dean, A. Young, in:, APS March Meeting 2019, American Physical Society, 2019. conference: end_date: 2019-03-08 location: Boston, MA, United States name: 'APS: American Physical Society' start_date: 2019-03-04 date_created: 2022-02-04T12:25:04Z date_published: 2019-03-01T00:00:00Z date_updated: 2022-02-08T10:23:13Z day: '01' extern: '1' intvolume: ' 64' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://meetings.aps.org/Meeting/MAR19/Session/V14.8 month: '03' oa: 1 oa_version: Published Version publication: APS March Meeting 2019 publication_identifier: issn: - 0003-0503 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Normal state transport in superconducting twisted bilayer graphene type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 64 year: '2019' ...