Berry curvature dipole current in the transition metal dichalcogenides family
Name
PhysRevB.98.121109.pdf
Size
1.83 MB
Format
Adobe PDF
Checksum (MD5)
84a3942bddf453c6289e40ea850d2bd1
Author(s)
You, Jhih-Shih
Fang, Shiang
Kaxiras, Efthimios
Low, Tony
Xu, Suyang
Date Issued
September 2018
Journal
Physical Review B
Publisher
American Physical Society
Citation
You, Jhih-Shih et al. "Berry curvature dipole current in the transition metal dichalcogenides family." Physical Review B 98, 12 (September 2018): 121109(R) © 2018 American Physical Society
Version
Final published version
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 T[subscript d]-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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.98.121109
