点反射
反常光电效应
反铁磁性
凝聚态物理
极化(电化学)
对称(几何)
磁矩
双层
垂直的
磁场
磁性结构
光电效应
物理
材料科学
光伏系统
化学
磁化
电气工程
量子力学
几何学
膜
数学
物理化学
工程类
生物化学
作者
Hanqi Pi,Shuai Zhang,Hongming Weng
出处
期刊:Cornell University - arXiv
日期:2023-02-19
标识
DOI:10.48550/arxiv.2302.09514
摘要
The bulk photovoltaic effect (BPVE) is a second-order optical process in noncentrosymmetric materials that converts the light into DC currents. BPVE is classified into shift current and injection current according to the generation mechanisms, whose dependence on the polarization of light is sensitive to the spatial and time-reversal symmetry of materials. In this work, we present a comprehensive study on the BPVE response of $EuSn_2As_2$ with different magnetic structures through symmetry analysis and first-principles calculation. We demonstrate that the interlayer antiferromagnetic (AFM) $EuSn_2As_2$ of even-layer breaks the inversion symmetry and has the second-order optical responses. Moreover, the bilayer AFM $EuSn_2As_2$ not only displays distinct BPVE responses when magnetic moments align in different directions, but also shows symmetry-related responses in two phases which have mutually perpendicular in-plane magnetic moments. Due to the dependence of BPVE responses on the polarization of light and magnetic symmetry, these magnetic structures can be distinguished by the circular polarized light with well-designed experiments. Our work demonstrates the feasibility of the BPVE response as a tool to probe the magnetic structure.
科研通智能强力驱动
Strongly Powered by AbleSci AI