---
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
fulldoi: https://doi.org/10.1145/3360550
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
fulldoi: https://doi.org/10.1186/s12915-019-0700-2
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'
fulldoi: https://doi.org/10.1016/j.sbi.2019.05.018
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'
fulldoi: https://doi.org/10.1038/s41431-018-0231-2
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'
fulldoi: https://doi.org/10.1126/science.aay5533
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'
fulldoi: https://doi.org/10.1038/s41567-019-0729-8
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'
fulldoi: https://doi.org/10.1038/s41567-019-0596-3
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'
fulldoi: https://doi.org/10.1021/acs.nanolett.9b01983
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 '
fulldoi: https://doi.org/10.1126/science.aav1910
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'
fulldoi: https://doi.org/10.36471/jccm_february_2019_03
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'
...
---
_id: '10725'
abstract:
- lang: eng
text: Bilayer graphene with ~ 1.1 degrees twist mismatch between the layers hosts
a low energy flat band in which the Coulomb interaction is large relative to the
bandwidth, promoting correlated insulating states at half band filling, and superconducting
(SC) phases with dome-like structure neighboring correlated insulating states.
Here we show measurements of a dual-graphite-gated twisted bilayer graphene device,
which minimizes charge inhomogeneity. We observe new correlated phases, including
for the first time a SC pocket near half-filling of the electron-doped band and
resistive states at quarter-filling of both bands that emerge in a magnetic field.
Changing the layer polarization with vertical electric field reveals an unexpected
competition between SC and correlated insulator phases, which we interpret to
result from differences in disorder of each graphene layer and underscores the
spatial inhomogeneity like twist angle as a significant source of disorder in
these devices [1].
alternative_title:
- Bulletin of the American Physical Society
article_number: R14.00004
article_processing_charge: No
author:
- first_name: Shaowen
full_name: Chen, Shaowen
last_name: Chen
- first_name: Matthew
full_name: Yankowitz, Matthew
last_name: Yankowitz
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: David E.
full_name: Graf, David E.
last_name: Graf
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
- first_name: Cory R.
full_name: Dean, Cory R.
last_name: Dean
citation:
ama: 'Chen S, Yankowitz M, Polshyn H, et al. Correlated insulating and superconducting
phases in twisted bilayer graphene. In: APS March Meeting 2019. Vol 64.
American Physical Society; 2019.'
apa: 'Chen, S., Yankowitz, M., Polshyn, H., Watanabe, K., Taniguchi, T., Graf, D.
E., … Dean, C. R. (2019). Correlated insulating and superconducting phases in
twisted bilayer graphene. In APS March Meeting 2019 (Vol. 64). Boston,
MA, United States: American Physical Society.'
chicago: Chen, Shaowen, Matthew Yankowitz, Hryhoriy Polshyn, Kenji Watanabe, Takashi
Taniguchi, David E. Graf, Andrea Young, and Cory R. Dean. “Correlated Insulating
and Superconducting Phases in Twisted Bilayer Graphene.” In APS March Meeting
2019, Vol. 64. American Physical Society, 2019.
ieee: S. Chen et al., “Correlated insulating and superconducting phases in
twisted bilayer graphene,” in APS March Meeting 2019, Boston, MA, United
States, 2019, vol. 64, no. 2.
ista: 'Chen S, Yankowitz M, Polshyn H, Watanabe K, Taniguchi T, Graf DE, Young A,
Dean CR. 2019. Correlated insulating and superconducting phases in twisted bilayer
graphene. APS March Meeting 2019. APS: American Physical Society, Bulletin of
the American Physical Society, vol. 64, R14.00004.'
mla: Chen, Shaowen, et al. “Correlated Insulating and Superconducting Phases in
Twisted Bilayer Graphene.” APS March Meeting 2019, vol. 64, no. 2, R14.00004,
American Physical Society, 2019.
short: S. Chen, M. Yankowitz, H. Polshyn, K. Watanabe, T. Taniguchi, D.E. Graf,
A. Young, C.R. Dean, 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: 2022-02-04T13:48:04Z
date_published: 2019-03-01T00:00:00Z
date_updated: 2022-02-08T10:24:13Z
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/R14.4
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'
related_material:
link:
- relation: used_in_publication
url: https://arxiv.org/abs/1808.07865
status: public
title: Correlated insulating and superconducting phases in twisted bilayer graphene
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 64
year: '2019'
...
---
_id: '7576'
abstract:
- lang: eng
text: We present the results of a friendly competition for formal verification of
continuous and hybrid systems with nonlinear continuous dynamics. The friendly
competition took place as part of the workshop Applied Verification for Continuous
and Hybrid Systems (ARCH) in 2019. In this year, 6 tools Ariadne, CORA, DynIbex,
Flow*, Isabelle/HOL, and JuliaReach (in alphabetic order) participated. They are
applied to solve reachability analysis problems on four benchmark problems, one
of them with hybrid dynamics. We do not rank the tools based on the results, but
show the current status and discover the potential advantages of different tools.
article_processing_charge: No
author:
- first_name: Fabian
full_name: Immler, Fabian
last_name: Immler
- first_name: Matthias
full_name: Althoff, Matthias
last_name: Althoff
- first_name: Luis
full_name: Benet, Luis
last_name: Benet
- first_name: Alexandre
full_name: Chapoutot, Alexandre
last_name: Chapoutot
- first_name: Xin
full_name: Chen, Xin
last_name: Chen
- first_name: Marcelo
full_name: Forets, Marcelo
last_name: Forets
- first_name: Luca
full_name: Geretti, Luca
last_name: Geretti
- first_name: Niklas
full_name: Kochdumper, Niklas
last_name: Kochdumper
- first_name: David P.
full_name: Sanders, David P.
last_name: Sanders
- first_name: Christian
full_name: Schilling, Christian
id: 3A2F4DCE-F248-11E8-B48F-1D18A9856A87
last_name: Schilling
orcid: 0000-0003-3658-1065
citation:
ama: 'Immler F, Althoff M, Benet L, et al. ARCH-COMP19 Category Report: Continuous
and hybrid systems with nonlinear dynamics. In: EPiC Series in Computing.
Vol 61. EasyChair; 2019:41-61. doi:10.29007/m75b'
apa: 'Immler, F., Althoff, M., Benet, L., Chapoutot, A., Chen, X., Forets, M., …
Schilling, C. (2019). ARCH-COMP19 Category Report: Continuous and hybrid systems
with nonlinear dynamics. In EPiC Series in Computing (Vol. 61, pp. 41–61).
Montreal, Canada: EasyChair. https://doi.org/10.29007/m75b'
chicago: 'Immler, Fabian, Matthias Althoff, Luis Benet, Alexandre Chapoutot, Xin
Chen, Marcelo Forets, Luca Geretti, Niklas Kochdumper, David P. Sanders, and Christian
Schilling. “ARCH-COMP19 Category Report: Continuous and Hybrid Systems with Nonlinear
Dynamics.” In EPiC Series in Computing, 61:41–61. EasyChair, 2019. https://doi.org/10.29007/m75b.'
ieee: 'F. Immler et al., “ARCH-COMP19 Category Report: Continuous and hybrid
systems with nonlinear dynamics,” in EPiC Series in Computing, Montreal,
Canada, 2019, vol. 61, pp. 41–61.'
ista: 'Immler F, Althoff M, Benet L, Chapoutot A, Chen X, Forets M, Geretti L, Kochdumper
N, Sanders DP, Schilling C. 2019. ARCH-COMP19 Category Report: Continuous and
hybrid systems with nonlinear dynamics. EPiC Series in Computing. ARCH: International
Workshop on Applied Verification on Continuous and Hybrid Systems vol. 61, 41–61.'
mla: 'Immler, Fabian, et al. “ARCH-COMP19 Category Report: Continuous and Hybrid
Systems with Nonlinear Dynamics.” EPiC Series in Computing, vol. 61, EasyChair,
2019, pp. 41–61, doi:10.29007/m75b.'
short: F. Immler, M. Althoff, L. Benet, A. Chapoutot, X. Chen, M. Forets, L. Geretti,
N. Kochdumper, D.P. Sanders, C. Schilling, in:, EPiC Series in Computing, EasyChair,
2019, pp. 41–61.
conference:
end_date: 2019-04-15
location: Montreal, Canada
name: 'ARCH: International Workshop on Applied Verification on Continuous and Hybrid
Systems'
start_date: 2019-04-15
corr_author: '1'
date_created: 2020-03-08T23:00:49Z
date_published: 2019-05-25T00:00:00Z
date_updated: 2026-04-03T09:51:13Z
day: '25'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.29007/m75b
file:
- access_level: open_access
checksum: 9138977a06fcd6a95976eb4bca875f0c
content_type: application/pdf
creator: dernst
date_created: 2020-03-24T07:36:36Z
date_updated: 2020-07-14T12:48:00Z
file_id: '7617'
file_name: 2019_ARCH19_Immler.pdf
file_size: 1934830
relation: main_file
file_date_updated: 2020-07-14T12:48:00Z
fulldoi: https://doi.org/10.29007/m75b
has_accepted_license: '1'
intvolume: ' 61'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: 41-61
publication: EPiC Series in Computing
publication_identifier:
eissn:
- 2398-7340
publication_status: published
publisher: EasyChair
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'ARCH-COMP19 Category Report: Continuous and hybrid systems with nonlinear
dynamics'
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 61
year: '2019'
...
---
_id: '7627'
abstract:
- lang: eng
text: 'Electrodepositing insulating and insoluble Li2O2 is the key process during discharge of aprotic Li-O2
batteries and determines rate, capacity, and reversibility. Current understanding states that the
partition between surface adsorbed and solvated LiO2 governs whether Li2O2 grows as surface film,
leading to low capacity even at low rates, or in solution, leading to particles
and high capacities. Here we show that Li2O2 forms to the widest extent as particles
via solution mediated LiO2 disproportionation. We describe a unified Li2O2 growth model that conclusively explains capacity limitations across the
whole range of electrolytes. Deciding for particle morphology, achievable rate
and capacities are species mobilities, electrode specific surface area (determining true areal rate) and the concentration
distribution of associated LiO2 in solution. Provided that species mobilities
and surface are high, high, capacities are possible even with low-donor-number
electrolytes, previously considered prototypical for low capacity via surface growth. The tools for these insights are microscopy, hydrodynamic
voltammetry, a numerical reaction model, and in situ small/wide angle X-ray scattering
(SAXS/WAXS). Combined with sophisticated data analysis, SAXS allows retrieving
rich quantitative information from complex multi-phase systems. On a wider perspective,
this SAXS method is a powerful in situ metrology with atomic to sub-micron resolution to study mechanisms in complex electrochemical systems and
beyond. '
article_processing_charge: No
author:
- first_name: Christian
full_name: Prehal, Christian
last_name: Prehal
- first_name: Aleksej
full_name: Samojlov, Aleksej
last_name: Samojlov
- first_name: Manfred
full_name: Nachtnebel, Manfred
last_name: Nachtnebel
- first_name: Manfred
full_name: Kriechbaum, Manfred
last_name: Kriechbaum
- first_name: Heinz
full_name: Amenitsch, Heinz
last_name: Amenitsch
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
citation:
ama: Prehal C, Samojlov A, Nachtnebel M, Kriechbaum M, Amenitsch H, Freunberger
SA. A revised O2 reduction model in Li-O2 batteries as revealed by in situ small
angle X-ray scattering.
apa: Prehal, C., Samojlov, A., Nachtnebel, M., Kriechbaum, M., Amenitsch, H., &
Freunberger, S. A. (n.d.). A revised O2 reduction model in Li-O2 batteries as
revealed by in situ small angle X-ray scattering. ChemRxiv.
chicago: Prehal, Christian, Aleksej Samojlov, Manfred Nachtnebel, Manfred Kriechbaum,
Heinz Amenitsch, and Stefan Alexander Freunberger. “A Revised O2 Reduction Model
in Li-O2 Batteries as Revealed by in Situ Small Angle X-Ray Scattering.” ChemRxiv,
n.d.
ieee: C. Prehal, A. Samojlov, M. Nachtnebel, M. Kriechbaum, H. Amenitsch, and S.
A. Freunberger, “A revised O2 reduction model in Li-O2 batteries as revealed by
in situ small angle X-ray scattering.” ChemRxiv.
ista: Prehal C, Samojlov A, Nachtnebel M, Kriechbaum M, Amenitsch H, Freunberger
SA. A revised O2 reduction model in Li-O2 batteries as revealed by in situ small
angle X-ray scattering.
mla: Prehal, Christian, et al. A Revised O2 Reduction Model in Li-O2 Batteries
as Revealed by in Situ Small Angle X-Ray Scattering. ChemRxiv.
short: C. Prehal, A. Samojlov, M. Nachtnebel, M. Kriechbaum, H. Amenitsch, S.A.
Freunberger, (n.d.).
date_created: 2020-04-01T10:10:21Z
date_published: 2019-12-26T00:00:00Z
date_updated: 2020-04-06T10:36:21Z
day: '26'
extern: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.26434/chemrxiv.11447775.v1
month: '12'
oa: 1
oa_version: Preprint
page: '50'
publication_status: submitted
publisher: ChemRxiv
status: public
title: A revised O2 reduction model in Li-O2 batteries as revealed by in situ small
angle X-ray scattering
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2019'
...
---
_id: '7639'
abstract:
- lang: eng
text: Deep neural networks (DNNs) have become increasingly important due to their
excellent empirical performance on a wide range of problems. However, regularization
is generally achieved by indirect means, largely due to the complex set of functions
defined by a network and the difficulty in measuring function complexity. There
exists no method in the literature for additive regularization based on a norm
of the function, as is classically considered in statistical learning theory.
In this work, we study the tractability of function norms for deep neural networks
with ReLU activations. We provide, to the best of our knowledge, the first proof
in the literature of the NP-hardness of computing function norms of DNNs of 3
or more layers. We also highlight a fundamental difference between shallow and
deep networks. In the light on these results, we propose a new regularization
strategy based on approximate function norms, and show its efficiency on a segmentation
task with a DNN.
article_number: 748-752
article_processing_charge: No
author:
- first_name: Amal
full_name: Rannen-Triki, Amal
last_name: Rannen-Triki
- first_name: Maxim
full_name: Berman, Maxim
last_name: Berman
- first_name: Vladimir
full_name: Kolmogorov, Vladimir
id: 3D50B0BA-F248-11E8-B48F-1D18A9856A87
last_name: Kolmogorov
- first_name: Matthew B.
full_name: Blaschko, Matthew B.
last_name: Blaschko
citation:
ama: 'Rannen-Triki A, Berman M, Kolmogorov V, Blaschko MB. Function norms for neural
networks. In: Proceedings of the 2019 International Conference on Computer
Vision Workshop. IEEE; 2019. doi:10.1109/ICCVW.2019.00097'
apa: 'Rannen-Triki, A., Berman, M., Kolmogorov, V., & Blaschko, M. B. (2019).
Function norms for neural networks. In Proceedings of the 2019 International
Conference on Computer Vision Workshop. Seoul, South Korea: IEEE. https://doi.org/10.1109/ICCVW.2019.00097'
chicago: Rannen-Triki, Amal, Maxim Berman, Vladimir Kolmogorov, and Matthew B. Blaschko.
“Function Norms for Neural Networks.” In Proceedings of the 2019 International
Conference on Computer Vision Workshop. IEEE, 2019. https://doi.org/10.1109/ICCVW.2019.00097.
ieee: A. Rannen-Triki, M. Berman, V. Kolmogorov, and M. B. Blaschko, “Function norms
for neural networks,” in Proceedings of the 2019 International Conference on
Computer Vision Workshop, Seoul, South Korea, 2019.
ista: 'Rannen-Triki A, Berman M, Kolmogorov V, Blaschko MB. 2019. Function norms
for neural networks. Proceedings of the 2019 International Conference on Computer
Vision Workshop. ICCVW: International Conference on Computer Vision Workshop,
748–752.'
mla: Rannen-Triki, Amal, et al. “Function Norms for Neural Networks.” Proceedings
of the 2019 International Conference on Computer Vision Workshop, 748–752,
IEEE, 2019, doi:10.1109/ICCVW.2019.00097.
short: A. Rannen-Triki, M. Berman, V. Kolmogorov, M.B. Blaschko, in:, Proceedings
of the 2019 International Conference on Computer Vision Workshop, IEEE, 2019.
conference:
end_date: 2019-10-28
location: Seoul, South Korea
name: 'ICCVW: International Conference on Computer Vision Workshop'
start_date: 2019-10-27
date_created: 2020-04-05T22:00:50Z
date_published: 2019-10-01T00:00:00Z
date_updated: 2023-09-08T11:19:12Z
day: '01'
department:
- _id: VlKo
doi: 10.1109/ICCVW.2019.00097
external_id:
isi:
- '000554591600090'
fulldoi: https://doi.org/10.1109/ICCVW.2019.00097
isi: 1
language:
- iso: eng
month: '10'
oa_version: None
publication: Proceedings of the 2019 International Conference on Computer Vision Workshop
publication_identifier:
isbn:
- '9781728150239'
publication_status: published
publisher: IEEE
quality_controlled: '1'
scopus_import: '1'
status: public
title: Function norms for neural networks
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2019'
...
---
_id: '7640'
abstract:
- lang: eng
text: We propose a new model for detecting visual relationships, such as "person
riding motorcycle" or "bottle on table". This task is an important step towards
comprehensive structured mage understanding, going beyond detecting individual
objects. Our main novelty is a Box Attention mechanism that allows to model pairwise
interactions between objects using standard object detection pipelines. The resulting
model is conceptually clean, expressive and relies on well-justified training
and prediction procedures. Moreover, unlike previously proposed approaches, our
model does not introduce any additional complex components or hyperparameters
on top of those already required by the underlying detection model. We conduct
an experimental evaluation on two datasets, V-COCO and Open Images, demonstrating
strong quantitative and qualitative results.
article_number: 1749-1753
article_processing_charge: No
arxiv: 1
author:
- first_name: Alexander
full_name: Kolesnikov, Alexander
id: 2D157DB6-F248-11E8-B48F-1D18A9856A87
last_name: Kolesnikov
- first_name: Alina
full_name: Kuznetsova, Alina
last_name: Kuznetsova
- first_name: Christoph
full_name: Lampert, Christoph
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0001-8622-7887
- first_name: Vittorio
full_name: Ferrari, Vittorio
last_name: Ferrari
citation:
ama: 'Kolesnikov A, Kuznetsova A, Lampert C, Ferrari V. Detecting visual relationships
using box attention. In: Proceedings of the 2019 International Conference on
Computer Vision Workshop. IEEE; 2019. doi:10.1109/ICCVW.2019.00217'
apa: 'Kolesnikov, A., Kuznetsova, A., Lampert, C., & Ferrari, V. (2019). Detecting
visual relationships using box attention. In Proceedings of the 2019 International
Conference on Computer Vision Workshop. Seoul, South Korea: IEEE. https://doi.org/10.1109/ICCVW.2019.00217'
chicago: Kolesnikov, Alexander, Alina Kuznetsova, Christoph Lampert, and Vittorio
Ferrari. “Detecting Visual Relationships Using Box Attention.” In Proceedings
of the 2019 International Conference on Computer Vision Workshop. IEEE, 2019.
https://doi.org/10.1109/ICCVW.2019.00217.
ieee: A. Kolesnikov, A. Kuznetsova, C. Lampert, and V. Ferrari, “Detecting visual
relationships using box attention,” in Proceedings of the 2019 International
Conference on Computer Vision Workshop, Seoul, South Korea, 2019.
ista: 'Kolesnikov A, Kuznetsova A, Lampert C, Ferrari V. 2019. Detecting visual
relationships using box attention. Proceedings of the 2019 International Conference
on Computer Vision Workshop. ICCVW: International Conference on Computer Vision
Workshop, 1749–1753.'
mla: Kolesnikov, Alexander, et al. “Detecting Visual Relationships Using Box Attention.”
Proceedings of the 2019 International Conference on Computer Vision Workshop,
1749–1753, IEEE, 2019, doi:10.1109/ICCVW.2019.00217.
short: A. Kolesnikov, A. Kuznetsova, C. Lampert, V. Ferrari, in:, Proceedings of
the 2019 International Conference on Computer Vision Workshop, IEEE, 2019.
conference:
end_date: 2019-10-28
location: Seoul, South Korea
name: 'ICCVW: International Conference on Computer Vision Workshop'
start_date: 2019-10-27
date_created: 2020-04-05T22:00:51Z
date_published: 2019-10-01T00:00:00Z
date_updated: 2025-04-15T07:10:23Z
day: '01'
department:
- _id: ChLa
doi: 10.1109/ICCVW.2019.00217
ec_funded: 1
external_id:
arxiv:
- '1807.02136'
isi:
- '000554591601098'
fulldoi: https://doi.org/10.1109/ICCVW.2019.00217
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1807.02136
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 2532554C-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '308036'
name: Lifelong Learning of Visual Scene Understanding
publication: Proceedings of the 2019 International Conference on Computer Vision Workshop
publication_identifier:
isbn:
- '9781728150239'
publication_status: published
publisher: IEEE
quality_controlled: '1'
scopus_import: '1'
status: public
title: Detecting visual relationships using box attention
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2019'
...
---
_id: '7710'
abstract:
- lang: eng
text: 'The number of human genomes being genotyped or sequenced increases exponentially
and efficient haplotype estimation methods able to handle this amount of data
are now required. Here we present a method, SHAPEIT4, which substantially improves
upon other methods to process large genotype and high coverage sequencing datasets.
It notably exhibits sub-linear running times with sample size, provides highly
accurate haplotypes and allows integrating external phasing information such as
large reference panels of haplotypes, collections of pre-phased variants and long
sequencing reads. We provide SHAPEIT4 in an open source format and demonstrate
its performance in terms of accuracy and running times on two gold standard datasets:
the UK Biobank data and the Genome In A Bottle.'
article_number: '5436'
article_processing_charge: No
article_type: original
author:
- first_name: Olivier
full_name: Delaneau, Olivier
last_name: Delaneau
- first_name: Jean-François
full_name: Zagury, Jean-François
last_name: Zagury
- first_name: Matthew Richard
full_name: Robinson, Matthew Richard
id: E5D42276-F5DA-11E9-8E24-6303E6697425
last_name: Robinson
orcid: 0000-0001-8982-8813
- first_name: Jonathan L.
full_name: Marchini, Jonathan L.
last_name: Marchini
- first_name: Emmanouil T.
full_name: Dermitzakis, Emmanouil T.
last_name: Dermitzakis
citation:
ama: Delaneau O, Zagury J-F, Robinson MR, Marchini JL, Dermitzakis ET. Accurate,
scalable and integrative haplotype estimation. Nature Communications. 2019;10.
doi:10.1038/s41467-019-13225-y
apa: Delaneau, O., Zagury, J.-F., Robinson, M. R., Marchini, J. L., & Dermitzakis,
E. T. (2019). Accurate, scalable and integrative haplotype estimation. Nature
Communications. Springer Nature. https://doi.org/10.1038/s41467-019-13225-y
chicago: Delaneau, Olivier, Jean-François Zagury, Matthew Richard Robinson, Jonathan
L. Marchini, and Emmanouil T. Dermitzakis. “Accurate, Scalable and Integrative
Haplotype Estimation.” Nature Communications. Springer Nature, 2019. https://doi.org/10.1038/s41467-019-13225-y.
ieee: O. Delaneau, J.-F. Zagury, M. R. Robinson, J. L. Marchini, and E. T. Dermitzakis,
“Accurate, scalable and integrative haplotype estimation,” Nature Communications,
vol. 10. Springer Nature, 2019.
ista: Delaneau O, Zagury J-F, Robinson MR, Marchini JL, Dermitzakis ET. 2019. Accurate,
scalable and integrative haplotype estimation. Nature Communications. 10, 5436.
mla: Delaneau, Olivier, et al. “Accurate, Scalable and Integrative Haplotype Estimation.”
Nature Communications, vol. 10, 5436, Springer Nature, 2019, doi:10.1038/s41467-019-13225-y.
short: O. Delaneau, J.-F. Zagury, M.R. Robinson, J.L. Marchini, E.T. Dermitzakis,
Nature Communications 10 (2019).
date_created: 2020-04-30T10:40:32Z
date_published: 2019-11-28T00:00:00Z
date_updated: 2021-01-12T08:15:01Z
day: '28'
doi: 10.1038/s41467-019-13225-y
extern: '1'
fulldoi: https://doi.org/10.1038/s41467-019-13225-y
intvolume: ' 10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/s41467-019-13225-y
month: '11'
oa: 1
oa_version: Published Version
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Accurate, scalable and integrative haplotype estimation
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 10
year: '2019'
...
---
_id: '7711'
abstract:
- lang: eng
text: The nature and extent of mitochondrial DNA variation in a population and how
it affects traits is poorly understood. Here we resequence the mitochondrial genomes
of 169 Drosophila Genetic Reference Panel lines, identifying 231 variants that
stratify along 12 mitochondrial haplotypes. We identify 1,845 cases of mitonuclear
allelic imbalances, thus implying that mitochondrial haplotypes are reflected
in the nuclear genome. However, no major fitness effects are associated with mitonuclear
imbalance, suggesting that such imbalances reflect population structure at the
mitochondrial level rather than genomic incompatibilities. Although mitochondrial
haplotypes have no direct impact on mitochondrial respiration, some haplotypes
are associated with stress- and metabolism-related phenotypes, including food
intake in males. Finally, through reciprocal swapping of mitochondrial genomes,
we demonstrate that a mitochondrial haplotype associated with high food intake
can rescue a low food intake phenotype. Together, our findings provide new insight
into population structure at the mitochondrial level and point to the importance
of incorporating mitochondrial haplotypes in genotype–phenotype relationship studies.
article_processing_charge: No
article_type: original
author:
- first_name: Roel P. J.
full_name: Bevers, Roel P. J.
last_name: Bevers
- first_name: Maria
full_name: Litovchenko, Maria
last_name: Litovchenko
- first_name: Adamandia
full_name: Kapopoulou, Adamandia
last_name: Kapopoulou
- first_name: Virginie S.
full_name: Braman, Virginie S.
last_name: Braman
- first_name: Matthew Richard
full_name: Robinson, Matthew Richard
id: E5D42276-F5DA-11E9-8E24-6303E6697425
last_name: Robinson
orcid: 0000-0001-8982-8813
- first_name: Johan
full_name: Auwerx, Johan
last_name: Auwerx
- first_name: Brian
full_name: Hollis, Brian
last_name: Hollis
- first_name: Bart
full_name: Deplancke, Bart
last_name: Deplancke
citation:
ama: Bevers RPJ, Litovchenko M, Kapopoulou A, et al. Mitochondrial haplotypes affect
metabolic phenotypes in the Drosophila Genetic Reference Panel. Nature Metabolism.
2019;1(12):1226-1242. doi:10.1038/s42255-019-0147-3
apa: Bevers, R. P. J., Litovchenko, M., Kapopoulou, A., Braman, V. S., Robinson,
M. R., Auwerx, J., … Deplancke, B. (2019). Mitochondrial haplotypes affect metabolic
phenotypes in the Drosophila Genetic Reference Panel. Nature Metabolism.
Springer Nature. https://doi.org/10.1038/s42255-019-0147-3
chicago: Bevers, Roel P. J., Maria Litovchenko, Adamandia Kapopoulou, Virginie S.
Braman, Matthew Richard Robinson, Johan Auwerx, Brian Hollis, and Bart Deplancke.
“Mitochondrial Haplotypes Affect Metabolic Phenotypes in the Drosophila Genetic
Reference Panel.” Nature Metabolism. Springer Nature, 2019. https://doi.org/10.1038/s42255-019-0147-3.
ieee: R. P. J. Bevers et al., “Mitochondrial haplotypes affect metabolic
phenotypes in the Drosophila Genetic Reference Panel,” Nature Metabolism,
vol. 1, no. 12. Springer Nature, pp. 1226–1242, 2019.
ista: Bevers RPJ, Litovchenko M, Kapopoulou A, Braman VS, Robinson MR, Auwerx J,
Hollis B, Deplancke B. 2019. Mitochondrial haplotypes affect metabolic phenotypes
in the Drosophila Genetic Reference Panel. Nature Metabolism. 1(12), 1226–1242.
mla: Bevers, Roel P. J., et al. “Mitochondrial Haplotypes Affect Metabolic Phenotypes
in the Drosophila Genetic Reference Panel.” Nature Metabolism, vol. 1,
no. 12, Springer Nature, 2019, pp. 1226–42, doi:10.1038/s42255-019-0147-3.
short: R.P.J. Bevers, M. Litovchenko, A. Kapopoulou, V.S. Braman, M.R. Robinson,
J. Auwerx, B. Hollis, B. Deplancke, Nature Metabolism 1 (2019) 1226–1242.
date_created: 2020-04-30T10:40:56Z
date_published: 2019-12-09T00:00:00Z
date_updated: 2021-01-12T08:15:01Z
day: '09'
doi: 10.1038/s42255-019-0147-3
extern: '1'
fulldoi: https://doi.org/10.1038/s42255-019-0147-3
intvolume: ' 1'
issue: '12'
language:
- iso: eng
month: '12'
oa_version: None
page: 1226-1242
publication: Nature Metabolism
publication_identifier:
issn:
- 2522-5812
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1038/s42255-020-0202-0
status: public
title: Mitochondrial haplotypes affect metabolic phenotypes in the Drosophila Genetic
Reference Panel
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2019'
...