title: Unconventional quantum Hall effect and tunable spin hall effect in Dirac materials: application to an isolated MoS2 trilayer.
abstract: We analyze the Landau level (LL) structure in a MoS(2) trilayer and find a field-dependent unconventional Hall plateau sequence ν=…,-2M-6,-2M-4,-2M-2,-2M-1,…,-5,-3,-1,0,2,4,…. Because of orbital asymmetry, the low-energy Dirac fermions become heavily massive and the LL energies grow linearly with B, rather than with √[B]. Spin-orbital couplings break spin and valley degenerate LL's into two groups, with LL crossing effects present in the valence bands. In a p-n junction, spin-resolved fractionally quantized conductance appears in two-terminal measurements with a controllable spin-polarized current that can be probed at the interface. We also show the tunability of zero-field spin Hall conductivity.
authors: Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA.
authors: Xiao
authors: X
authors: Li
authors: Fan
authors: F
authors: Zhang
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authors: Q
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