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- W4302012191 abstract "Recently, the topological flat bands and spin Hall effect have been experimentally observed in the AB-stacked MoTe$_2$/WSe$_2$ heterostructures. In this work, we systematically study the Berry curvature effects in moir'{e} transition metal dichalcogenide (TMD) heterobilayers. We point out that the moir'{e} potential of the remote conduction bands would induce a sizable periodic pseudo-magnetic field (PMF) on the valence band. This periodic PMF creates net Berry curvature flux in each valley of the moir'{e} Brillouin zone. The combination of the effect of the Berry curvature and the spin-valley locking can induce the spin Hall effect being observed in the experiment. Interestingly, the valley-contrasting Berry curvature distribution generated by the PMF can be probed through shift currents, which are DC currents induced by linearly polarized lights through nonlinear responses. Our work shed lights on the novel quantum phenomena induced by Berry curvatures in moir'e TMD heterobilayers." @default.
- W4302012191 created "2022-10-06" @default.
- W4302012191 creator A5038550260 @default.
- W4302012191 creator A5081693313 @default.
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- W4302012191 date "2022-10-03" @default.
- W4302012191 modified "2023-09-27" @default.
- W4302012191 title "Berry curvature, spin Hall effect and nonlinear optical response in moir'e transition metal dichalcogenide heterobilayers" @default.
- W4302012191 doi "https://doi.org/10.48550/arxiv.2210.00759" @default.
- W4302012191 hasPublicationYear "2022" @default.
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