论文标题
平面磁场引起的量化和半量化的异常霍尔效应
Quantized and half-quantized Anomalous Hall effect induced by in-plane magnetic field
论文作者
论文摘要
在本文中，我们建议，可以通过Zeeman耦合在非磁性2D系统中的Zeeman耦合来诱导量化和几乎一半的内在异常霍尔效应，并具有相当的自旋轨道耦合，但没有两个倍的旋转对称性。 $ c_ {3v} $对称性的2D电子气模型得出了分析结果。基于$ \ boldsymbol {k \ cdot p} $ hamiltonian从第一个原理计算中得出的哈密顿量，我们发现可以在$ \ mathrm {sb_2te_3} $薄膜中观察到量化且几乎一半的电导率，并在清洁限制中，具有强大的磁场磁场$ b> 20 \ \ \ \ \ thow $ t < \ Mathrm {Mk} $。
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 non-magnetic 2D systems with sizeable spin-orbital coupling but without two-fold rotational symmetry. An analytical result is derived for 2D electron gas model with $C_{3v}$ symmetry. Based on the $\boldsymbol{k\cdot p}$ Hamiltonian derived from first principle calculations, we find that quantized and nearly half-quantized conductance can be observed in $\mathrm{Sb_2Te_3}$ thin film in the clean limit with strong in-plane magnetic field $B>20\ \mathrm{T}$ and low temperature $T<100\ \mathrm{mK}$.
