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Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS(2)
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....
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8463715/ https://www.ncbi.nlm.nih.gov/pubmed/34561454 http://dx.doi.org/10.1038/s41467-021-25922-8 |
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author | Xian, Lede Claassen, Martin Kiese, Dominik Scherer, Michael M. Trebst, Simon Kennes, Dante M. Rubio, Angel |
author_facet | Xian, Lede Claassen, Martin Kiese, Dominik Scherer, Michael M. Trebst, Simon Kennes, Dante M. Rubio, Angel |
author_sort | Xian, Lede |
collection | PubMed |
description | 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 MoS(2). We report that, in marked contrast to twisted bilayer graphene, slightly hole-doped MoS(2) 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 moiré interference. We study the collective behavior of twisted bilayer MoS(2) 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. |
format | Online Article Text |
id | pubmed-8463715 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-84637152021-10-22 Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS(2) Xian, Lede Claassen, Martin Kiese, Dominik Scherer, Michael M. Trebst, Simon Kennes, Dante M. Rubio, Angel Nat Commun Article 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 MoS(2). We report that, in marked contrast to twisted bilayer graphene, slightly hole-doped MoS(2) 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 moiré interference. We study the collective behavior of twisted bilayer MoS(2) 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. Nature Publishing Group UK 2021-09-24 /pmc/articles/PMC8463715/ /pubmed/34561454 http://dx.doi.org/10.1038/s41467-021-25922-8 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access 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/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Xian, Lede Claassen, Martin Kiese, Dominik Scherer, Michael M. Trebst, Simon Kennes, Dante M. Rubio, Angel Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS(2) |
title | Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS(2) |
title_full | Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS(2) |
title_fullStr | Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS(2) |
title_full_unstemmed | Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS(2) |
title_short | Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS(2) |
title_sort | realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer mos(2) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8463715/ https://www.ncbi.nlm.nih.gov/pubmed/34561454 http://dx.doi.org/10.1038/s41467-021-25922-8 |
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