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• W2728897436 abstract "We first derive the energy dispersion of bilayer ${mathrm{MoS}}_{2}$ in the presence of a perpendicular electric field ${E}_{z}$. We show that the band gap and layer splitting can be controlled by the field ${E}_{z}$. Away from the $k$ point, the intrinsic spin-orbit coupling splitting increases in the conduction band but is weakly affected in the valence band. We then analyze the band structure in the presence of a perpendicular magnetic field $B$ and the field ${E}_{z}$, including spin and valley Zeeman terms, and evaluate the Hall and longitudinal conductivities. We discuss the numerical results as functions of the fields $B$ and ${E}_{z}$ for finite temperatures. The field $B$ gives rise to a significant spin splitting in the conduction band, to a beating in the Shubnikov--de Haas (SdH) oscillations when it is weak, and to their splitting when it is strong. The Zeeman terms and ${E}_{z}$ suppress the beating and change the positions of the beating nodes of the SdH oscillations at low $B$ fields and enhance their splitting at high $B$ fields. Similar beating patterns are observed in the spin and valley polarizations at low $B$ fields. Interestingly, a $90%$ spin polarization and a $100%$ square-wave-shaped valley polarization are observed at high $B$ fields. The Hall-plateau sequence depends on ${E}_{z}$. These findings may be pertinent to future spintronic and valleytronic devices." @default.
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• W2728897436 date "2017-07-07" @default.
• W2728897436 modified "2023-10-17" @default.
• W2728897436 title "Quantum magnetotransport in bilayer <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:msub><mml:mi>MoS</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math> : Influence of perpendicular electric field" @default.
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• W2728897436 doi "https://doi.org/10.1103/physrevb.96.045405" @default.
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