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 C3v symmetry. Based on the k⋅p Hamiltonian derived from first principle calculations, we find that quantized and nearly half-quantized conductance can be observed in Sb2Te3 thin film in the clean limit with strong in-plane magnetic field B>20T and low temperature T<100mK.
@article{arxiv.2203.14301,
title = {Quantized and half-quantized Anomalous Hall effect induced by in-plane magnetic field},
author = {Song Sun and Hongming Weng and Xi Dai},
journal= {arXiv preprint arXiv:2203.14301},
year = {2022}
}