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118368 |
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|a You, Jhih-Shih
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|a Massachusetts Institute of Technology. Department of Physics
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|a Xu, Suyang
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|a Fang, Shiang
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|a Kaxiras, Efthimios
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|a Low, Tony
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|a Xu, Suyang
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|a Berry curvature dipole current in the transition metal dichalcogenides family
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|b American Physical Society,
|c 2018-10-05T14:53:00Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/118368
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|a 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.
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|a National Science Foundation (U.S.) (Grant DMR-1231319)
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|a United States. Army Research Office (Award W911NF-14-0247)
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|a Article
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|t Physical Review B
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