期刊
PHYSICAL REVIEW B
卷 106, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.106.235135
关键词
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资金
- Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN-2020-05060]
- NSERC postgrad-uate scholarships doctoral program
This article investigates the flat energy bands and superconductivity in transition metal dichalcogenide bilayers, and predicts a method to control chiral superconductivity.
The observation of flat energy bands in transition metal dichalcogenide bilayers such as twisted WSe2 makes those materials interesting prospects for reproducing the behavior observed in graphene-based systems. We use an effective Hubbard model providing a description of twisted WSe2 to explore the presence of superconductiv-ity, which was previously reported in experiments. Using both the variational cluster approximation and cluster dynamical mean-field theory, we predict the existence of chiral superconductivity of type d +/- id that can be tuned by the twist angle and by the application of a perpendicular displacement field in both electron-and hole-doped systems.
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