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 journalArticlepeer-review

66 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
Article number121109
JournalPhysical Review B
Volume98
Issue number12
DOIs
Publication statusPublished - 2018 Sep 25
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Berry curvature dipole current in the transition metal dichalcogenides family'. Together they form a unique fingerprint.

Cite this