物理
Berry连接和曲率
电子
半经典物理学
极化率
波包
领域(数学)
电磁场
曲率
量子电动力学
凝聚态物理
量子力学
几何相位
量子
数学
分子
纯数学
几何学
作者
Yang Gao,Shengyuan A. Yang,Qian Niu
标识
DOI:10.1103/physrevlett.112.166601
摘要
We derive the field correction to the Berry curvature of Bloch electrons, which can be traced back to a positional shift due to the interband mixing induced by external electromagnetic fields. The resulting semiclassical dynamics is accurate to second order in the fields, in the same form as before, provided that the wave packet energy is derived up to the same order. As applications, we discuss the orbital magnetoelectric polarizability and predict nonlinear anomalous Hall effects.
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