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English

Spin-orbit coupling in transition metal dichalcogenide heterobilayer flat bands

ContributorsRademaker, Loukorcid
Published inPhysical review. B, vol. 105, no. 19, 195428
Publication date2022-05-23
First online date2022-05-23
Abstract

The valence flat bands in transition metal dichalcogenide (TMD) heterobilayers are shown to exhibit strong intralayer spin-orbit coupling. I show that symmetry constrains the spin-dependent complex phase of hopping terms in an effective tight-binding model of the valence flat bands. A perpendicular electric field causes interlayer hybridization, such that the effective model becomes equivalent to the Kane-Mele model of topological insulators. The proposed model can be used as a starting point to understand interactions and the experimentally observed topological transitions.

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Citation (ISO format)
RADEMAKER, Louk. Spin-orbit coupling in transition metal dichalcogenide heterobilayer flat bands. In: Physical review. B, 2022, vol. 105, n° 19, p. 195428. doi: 10.1103/PhysRevB.105.195428
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ISSN of the journal2469-9950
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Creation12/12/2022 12:54:00 PM
First validation12/12/2022 12:54:00 PM
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