Possible quantization and half-quantization in the anomalous Hall effect caused by in-plane magnetic field

Article

关键词: SINGLE DIRAC CONE;    SURFACE-STATE;    ELECTRON;    SB2TE3;    BI2SE3;   

DOI  :  10.1103/PhysRevB.106.L241105

来源: SCIE

【 摘 要 】

In this paper we propose that quantized and nearly half-quantized intrinsic anomalous Hall effect can be induced by in-plane external magnetic field through the Zeeman coupling in nonmagnetic two-dimensional (2D) systems with sizable spin-orbital coupling but without twofold rotational symmetry. An analytical result is derived for the 2D electron gas model with C3v symmetry. Further, based on the k center dot p Hamiltonian derived from first principle calculations, we find that the quantized and nearly half-quantized Hall conductance can be observed in Sb2Te3 thin film in the clean limit with strong in-plane magnetic field B > 20 T and low temperature T < 100 mK.

【 授权许可】

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