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- W4384408178 abstract "Abstract Among quantum devices based on 2D materials, gate-defined quantum confined 1D channels are much less explored, especially in the high-mobility regime where many-body interactions play an important role. We present the results of measurements and theory of conductance quantization in a gate-defined one-dimensional channel in a single layer of transition metal dichalcogenide material WSe 2 . In the quasi-ballistic regime of our high-mobility sample, we report conductance quantization steps in units of e 2 / h for a wide range of carrier concentrations. Magnetic field measurements show that as the field is raised, higher conductance plateaus move to accurate quantized values and then shift to lower conductance values while the e 2 / h plateau remains locked. Based on microscopic atomistic tight-binding theory, we show that in this material, valley and spin degeneracies result in 2 e 2 / h conductance steps for noninteracting holes, suggesting that symmetry-breaking mechanisms such as valley polarization dominate the transport properties of such quantum structures." @default.
- W4384408178 created "2023-07-16" @default.
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- W4384408178 date "2023-07-15" @default.
- W4384408178 modified "2023-10-16" @default.
- W4384408178 title "Anomalous conductance quantization of a one-dimensional channel in monolayer WSe2" @default.
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- W4384408178 doi "https://doi.org/10.1038/s41699-023-00407-y" @default.
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