论文标题
自旋偏振可调光电流
Spin-polarized tunable photocurrents
论文作者
论文摘要
利用拓扑材料的独特特征来开发新一代基于拓扑的设备是至高无上的挑战。使用浮子散射理论与原子模型结合使用，我们研究了激光照明，自旋和拓扑之间的相互作用，并在具有自旋轨道耦合的二维材料中研究。从拓扑阶段开始，我们展示了激光照明如何根据其旋转而有选择地破坏拓扑边缘状态。在线性和循环极化激光刷下的纯自旋电流和自旋偏振电荷光电流的产生表现出来。我们的结果为自旋偏振光电流的生成和控制打开了一条路径。
Harnessing the unique features of topological materials for the development of a new generation of topological based devices is a challenge of paramount importance. Using Floquet scattering theory combined with atomistic models we study the interplay between laser illumination, spin and topology in a two-dimensional material with spin-orbit coupling. Starting from a topological phase, we show how laser illumination can selectively disrupt the topological edge states depending on their spin. This is manifested by the generation of pure spin currents and spin-polarized charge photocurrents under linearly and circularly polarized laser-illumination, respectively. Our results open a path for the generation and control of spin-polarized photocurrents.
