期刊
PHYSICAL REVIEW B
卷 100, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.100.035448
关键词
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资金
- Pappalardo fellowship at MIT
- DOE Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-SC0018945]
- David and Lucile Packard Foundation
We study the effects of heterostrain on moire bands in twisted bilayer graphene and bilayer transition metal dichalcogenide (TMD) systems. For bilayer graphene with a twist angle near 1 degrees, we show that heterostrain significantly increases the energy separation between conduction and valence bands as well as the Dirac velocity at charge neutrality, which resolves several puzzles in scanning tunneling spectroscopy and quantum oscillation experiments at once. For bilayer TMD, we show that applying small heterostrain generally leads to flat moire bands that are highly tunable.
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