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Large non-reciprocal charge transport mediated by quantum anomalous Hall edge states

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The quantum anomalous Hall state is characterized by a dissipationless chiral edge current. When slightly carrier-doped, Cr-doped (Bi,Sb)2Te3, a magnetic topological insulator, shows current-direction-dependent resistance with a directional difference up to 26%, which probably originates from scattering between the chiral edge state and the Dirac surface state.

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"Large non-reciprocal charge transport mediated by quantum anomalous Hall edge states", MachPrinciple, July 14, 2020, https://machprinciple.com/post/Large-non-reciprocal-charge-transport-mediated-by-quantum-anomalous-Hall-edge-states

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