Berry curvature dipole current in the transition metal dichalcogenides family

Jhih Shih You, Shiang Fang, Su Yang Xu, Efthimios Kaxiras, Tony Low

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We study the quantum nonlinear Hall effect in two-dimensional (2D) materials with time-reversal symmetry. When only one mirror line exists, a transverse charge current occurs in the second-order response to an external electric field, as a result of the Berry curvature dipole in momentum space. Candidate 2D materials to observe this effect are two-dimensional transition metal dichalcogenides (TMDCs). First, we use an ab initio based tight-binding approach to demonstrate that monolayer Td-structure TMDCs exhibit a finite Berry curvature dipole. In the 1H and 1T′ phase of TMDCs, we show the emergence of a finite Berry curvature dipole with the application of strain and an electrical displacement field, respectively.

Original languageEnglish (US)
Article number121109
JournalPhysical Review B
Volume98
Issue number12
DOIs
StatePublished - Sep 25 2018

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Transition metals
transition metals
curvature
dipoles
Hall effect
Monolayers
Momentum
Mirrors
Electric fields
mirrors
momentum
electric fields
symmetry

Cite this

Berry curvature dipole current in the transition metal dichalcogenides family. / You, Jhih Shih; Fang, Shiang; Xu, Su Yang; Kaxiras, Efthimios; Low, Tony.

In: Physical Review B, Vol. 98, No. 12, 121109, 25.09.2018.

Research output: Contribution to journalArticle

You, Jhih Shih ; Fang, Shiang ; Xu, Su Yang ; Kaxiras, Efthimios ; Low, Tony. / Berry curvature dipole current in the transition metal dichalcogenides family. In: Physical Review B. 2018 ; Vol. 98, No. 12.
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