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  Realization of Nearly Dispersionless Bands with Strong Orbital Anisotropy from Destructive Interference in Twisted Bilayer MoS2

Xian, L. D., Claassen, M., Kiese, D., Scherer, M. M., Trebst, S., Kennes, D. M., et al. (2020). Realization of Nearly Dispersionless Bands with Strong Orbital Anisotropy from Destructive Interference in Twisted Bilayer MoS2.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-0EDC-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-0EDD-3
Genre: Paper

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2004.02964.pdf (Preprint), 5MB
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2004.02964.pdf
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Downlaoded from arxiv.org: 2020-04-09
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2020
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https://arxiv.org/abs/2004.02964 (Preprint)
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 Creators:
Xian, L. D.1, 2, Author              
Claassen, M.3, Author
Kiese, D.4, Author
Scherer, M. M.4, Author
Trebst, S.4, Author
Kennes, D. M.1, 2, 5, Author              
Rubio, A.1, 2, 3, 6, Author              
Affiliations:
1Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
2Center for Free Electron Laser Science, ou_persistent22              
3Center for Computational Quantum Physics, Simons Foundation Flatiron Institute, ou_persistent22              
4Institute for Theoretical Physics, University of Cologne, ou_persistent22              
5Institut für Theorie der Statistischen Physik, RWTH Aachen University and JARA-Fundamentals of Information Technology, ou_persistent22              
6Nano-Bio Spectroscopy Group, Departamento de Fisica de Materiales, Universidad del País Vasco, UPV/EHU, ou_persistent22              

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 Abstract: 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 px-py Hubbard model on the honeycomb lattice, with two almost entirely dispersionless bands emerging due to destructive 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.

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Language(s): eng - English
 Dates: 2020-04-06
 Publication Status: Published online
 Pages: 26
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: arXiv: 2004.02964
 Degree: -

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