论文标题
磁光照相电效应的量子动力学
Quantum Kinetics of the Magneto Photo Galvanic Effect
论文作者
论文摘要
使用Keldysh技术，我们在具有外部电气和磁场的存在下激发了一组非中心对称晶体中Bloch电子的准经典方程。这些方程是类似于半导体 - 基形方程的电子动力学，包括光钙效应（PGE），尤其是移位机理。最近将Shift PGE确定为对新光伏材料开发的希望。此外，我们的理论可能有助于研究破坏时间反转对称性和拓扑特性以及纳米光子学中最近局部激发实验的分析。为线性和圆极化光和磁场提供了光藻量张量的明确结果。此外，我们反驳了现有的陈述，即移位 - 表现效应不会导致照相室电流。
Using the Keldysh technique, we derive a set of quasiclassical equations for Bloch electrons in noncentrosymmetric crystals upon excitation with quasimonochromatic radiation in the presence of external electrical and magnetic fields. These equations are the analog to the semiconductor-Bloch-equations for the dynamics of electrons including the photogalvanic effect (PGE) in particular the shift mechanism. The shift PGE was recently identified as showing promise for the development of new photovoltaic materials. In addition, our theory may be useful to investigate the interplay between breaking time-reversal symmetry and topological properties as well as the analysis of recent local excitation experiments in nanophotonics. Explicit results for the photogalvanic tensors are presented for linear and circular polarized light and a magnetic field. In addition, we disprove existing statements that the shift-photogalvanic effect does not contribute to the photo-Hall current.
