Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2

[EN]Recently, the twist angle between adjacent sheets of stacked van der Waals materials emerged as a new knob to engineer correlated states of matter in two-dimensional heterostructures in a controlled manner, giving rise to emergent phenomena such as superconductivity or correlated insulating stat...

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Autores: Xian, Lede, Claassen, Martin, Kiese, Dominik, Scherer, Michael M., Trebst, Simon, Kennes, Dante M., Rubio Secades, Angel
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/53766
Acceso en línea:http://hdl.handle.net/10810/53766
Access Level:acceso abierto
Palabra clave:magic-angle
correlated states
superconductivity
insulator
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spelling Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2Xian, LedeClaassen, MartinKiese, DominikScherer, Michael M.Trebst, SimonKennes, Dante M.Rubio Secades, Angelmagic-anglecorrelated statessuperconductivityinsulator[EN]Recently, the twist angle between adjacent sheets of stacked van der Waals materials emerged as a new knob to engineer correlated states of matter in two-dimensional heterostructures in a controlled manner, giving rise to emergent phenomena such as superconductivity or correlated insulating states. Here, we use an ab initio based approach to characterize the electronic properties of twisted bilayer MoS2. We report that, in marked contrast to twisted bilayer graphene, slightly hole-doped MoS2 realizes a strongly asymmetric p(x)-p(y) Hubbard model on the honeycomb lattice, with two almost entirely dispersionless bands emerging due to destructive interference. The origin of these dispersionless bands, is similar to that of the flat bands in the prototypical Lieb or Kagome lattices and co-exists with the general band flattening at small twist angle due to the moire interference. We study the collective behavior of twisted bilayer MoS2 in the presence of interactions, and characterize an array of different magnetic and orbitally-ordered correlated phases, which may be susceptible to quantum fluctuations giving rise to exotic, purely quantum, states of matter. Twisted van der Waals systems are known to host flat electronic bands, originating from moire potential. Here, the authors predict from purely geometric considerations a new type of nearly dispersionless bands in twisted bilayer MoS2, resulting from destructive interference between effective lattice hopping matrix elements.This work is supported by the European Research Council (ERC-2015-AdG-694097), Grupos Consolidados (IT1249-19), and SFB925. MC and AR are supported by the Flatiron Institute, a division of the Simons Foundation. We acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy - Cluster of Excellence Matter and Light for Quantum Computing (ML4Q) EXC 2004/1 - 390534769 and Advanced Imaging of Matter (AIM) EXC 2056 - 390715994 and funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under RTG 1995 and RTG 2247. Support by the Max Planck Institute - New York City Center for Non-Equilibrium Quantum Phenomena is acknowledged. DK, MMS, and ST acknowledge support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), Projektnummer 277146847 - CRC 1238 (projects C02, C03).Nature ResearchEuropean Commission202120212021info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/53766reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/EC/H2020/694097https://www.nature.com/articles/s41467-021-25922-8info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/© The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/.Atribución 3.0 Españaoai:addi.ehu.eus:10810/537662026-06-18T09:23:17Z
dc.title.none.fl_str_mv Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2
title Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2
spellingShingle Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2
Xian, Lede
magic-angle
correlated states
superconductivity
insulator
title_short Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2
title_full Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2
title_fullStr Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2
title_full_unstemmed Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2
title_sort Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2
dc.creator.none.fl_str_mv Xian, Lede
Claassen, Martin
Kiese, Dominik
Scherer, Michael M.
Trebst, Simon
Kennes, Dante M.
Rubio Secades, Angel
author Xian, Lede
author_facet Xian, Lede
Claassen, Martin
Kiese, Dominik
Scherer, Michael M.
Trebst, Simon
Kennes, Dante M.
Rubio Secades, Angel
author_role author
author2 Claassen, Martin
Kiese, Dominik
Scherer, Michael M.
Trebst, Simon
Kennes, Dante M.
Rubio Secades, Angel
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
dc.subject.none.fl_str_mv magic-angle
correlated states
superconductivity
insulator
topic magic-angle
correlated states
superconductivity
insulator
description [EN]Recently, the twist angle between adjacent sheets of stacked van der Waals materials emerged as a new knob to engineer correlated states of matter in two-dimensional heterostructures in a controlled manner, giving rise to emergent phenomena such as superconductivity or correlated insulating states. Here, we use an ab initio based approach to characterize the electronic properties of twisted bilayer MoS2. We report that, in marked contrast to twisted bilayer graphene, slightly hole-doped MoS2 realizes a strongly asymmetric p(x)-p(y) Hubbard model on the honeycomb lattice, with two almost entirely dispersionless bands emerging due to destructive interference. The origin of these dispersionless bands, is similar to that of the flat bands in the prototypical Lieb or Kagome lattices and co-exists with the general band flattening at small twist angle due to the moire interference. We study the collective behavior of twisted bilayer MoS2 in the presence of interactions, and characterize an array of different magnetic and orbitally-ordered correlated phases, which may be susceptible to quantum fluctuations giving rise to exotic, purely quantum, states of matter. Twisted van der Waals systems are known to host flat electronic bands, originating from moire potential. Here, the authors predict from purely geometric considerations a new type of nearly dispersionless bands in twisted bilayer MoS2, resulting from destructive interference between effective lattice hopping matrix elements.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/53766
url http://hdl.handle.net/10810/53766
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/EC/H2020/694097
https://www.nature.com/articles/s41467-021-25922-8
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Nature Research
publisher.none.fl_str_mv Nature Research
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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