Berry连接和曲率
凝聚态物理
几何相位
霍尔效应
物理
量子霍尔效应
磁单极子
铁磁性
反铁磁性
拓扑(电路)
量子反常霍尔效应
曲率
电场
量化(信号处理)
量子自旋霍尔效应
磁场
量子力学
几何学
电气工程
数学
工程类
算法
作者
Wenbo Dai,Hailong Li,Dan Xu,Chui-Zhen Chen,X. C. Xie
出处
期刊:Cornell University - arXiv
日期:2022-06-20
标识
DOI:10.48550/arxiv.2206.09635
摘要
Recently, a type of Hall effect due to an unusual layer-locked Berry curvature called the layer Hall effect (LHE) has been reported in the even-layered two-dimensional antiferromagnetic (AFM) MnBi2Te4 [A. Gao et.al, Nature 595, 521 (2021)]. In this work, we report that the quantization of LHE, which we call the quantum anomalous layer Hall effect (QALHE), can be realized in MnBi2Te4. The QALHE originates from kicking a layer-locked Berry-curvature monopole out of the Fermi sea by a vertielectric cal field. Remarkably, we demonstrate that the electric-field reversal can switch the sign of the quantized Hall conductance of QALHE in the even-layered AFM phase. The QALHE can also be realized in the ferromagnetic phase. These results provide a promising way toward the electric engineering of the Berry curvature monopoles and quantized-layered transport in topological magnets.
科研通智能强力驱动
Strongly Powered by AbleSci AI