Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Valentin Crépel"'
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-6 (2024)
Abstract The observation of zero field fractional quantum Hall analogs in twisted transition metal dichalcogenides (TMDs) asks for a deeper understanding of what mechanisms lead to topological flat bands in two-dimensional heterostructures, and what
Externí odkaz:
https://doaj.org/article/a3f18792c06040cc8e61c7eb3ef11843
Autor:
Valentin Crépel, Andrew Millis
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033127 (2024)
Many of the important phases observed in twisted transition metal dichalcogenide homobilayers are driven by short-range interactions, which should be captured by a local tight binding description since no Wannier obstruction exists for these systems.
Externí odkaz:
https://doaj.org/article/a363f014d381443e8c7fb959cd2faf80
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p L032048 (2023)
We prove that all the criteria proposed in the literature to identify a Chern band hosting exact fractional Chern insulating ground states, in fact, describe an equivalence with a lowest Landau level defined in curved space under a nonuniform magneti
Externí odkaz:
https://doaj.org/article/6748cace90404f57b2c746be5fd81cf4
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
The e moiré superlattice in twisted 2D structures becomes a highly tunable platform of strongly correlated electron systems. Here, the authors predict rich physics at small twist angles in twisted transition metal dichalcogenide bilayers, including
Externí odkaz:
https://doaj.org/article/8cc0265d96c047c89b87ad99fb510643
Autor:
Valentin Crépel
Publikováno v:
AIP Advances, Vol 12, Iss 11, Pp 115301-115301-9 (2022)
We show that the quantum dimer state on the Kagome lattice, which was recently realized with high fidelity in a Rydberg quantum simulator [G. Semeghini et al., Science 374, 6572 (2021)], offers a sufficient resource for universal measurement-based qu
Externí odkaz:
https://doaj.org/article/ef774813f7d44349a2cd2a7b6908ac41
Autor:
Biswaroop Mukherjee, Airlia Shaffer, Parth B. Patel, Zhenjie Yan, Cedric C. Wilson, Valentin Crépel, Richard J. Fletcher, Martin Zwierlein
Publikováno v:
Nature. 601:58-62
This dataset contains all data presented in the paper "Crystallization of Bosonic Quantum Hall States in a Rotating Quantum Gas"
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5023a3890e031fbd54a9664e543cffc3
https://doi.org/10.1038/s41586-021-04170-2
https://doi.org/10.1038/s41586-021-04170-2
Autor:
Valentin Crépel, Liang Fu
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America. 119(13)
Significance We present a mechanism for unconventional superconductivity in doped band insulators, where short-ranged pairing interaction arises from Coulomb repulsion due to virtual interband or excitonic processes. Remarkably, electron pairing is f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84b5bd702958ea0d2370bf66a6cf65e1
https://pubmed.ncbi.nlm.nih.gov/35320044
https://pubmed.ncbi.nlm.nih.gov/35320044
Autor:
Valentin Crépel, Liang Fu
We predict robust Ising ferromagnetism driven by Coulomb interaction in the metallic phase of twisted transition metal dichalcogenides homobilayers for a range of small twist angles. Due to the presence of spin-valley locking and Chern band, the comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcb90825723033c99bd4d61c46caea49
Publikováno v:
Repositorio Institucional del Instituto Madrileño de Estudios Avanzados en Nanociencia
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instname
We analyze in detail the superconductivity that arises in an extended Hubbard model describing a multiband system with repulsive interactions. We show that virtual interband processes induce an effective attractive interaction for small momentum tran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b3818200d3ab91b35aae04baed4b1c3
http://hdl.handle.net/11697/190979
http://hdl.handle.net/11697/190979
Publikováno v:
Physical Review B
Physical Review B, American Physical Society, 2021, 103 (23), pp.235108. ⟨10.1103/PhysRevB.103.235108⟩
Physical Review B, American Physical Society, 2021, 103 (23), pp.235108. ⟨10.1103/PhysRevB.103.235108⟩
We investigate the entanglement entropy (EE) and charge fluctuations in models where the low energy physics is governed by massless Dirac fermions. We focus on the response to flux insertion which, for the EE, is widely assumed to be universal, \emph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ce948e17fa8c927d2c93abaa0b24d2a
https://hal.archives-ouvertes.fr/hal-03164413
https://hal.archives-ouvertes.fr/hal-03164413