论文标题
由自旋接近诱导的2D过渡金属二分法中的激光磁光kerr效应
Excitonic Magneto-Optical Kerr Effect in 2D Transition Metal Dichalcogenides Induced by Spin Proximity
论文作者
论文摘要
在本文中，我们在零磁场处的二维（2D）过渡金属二核苷中开发了Kerr旋转角的激子理论。有限的KERR角是由由于存在Ferromagnet而引起的自旋轨道分裂与接近交换耦合之间的相互作用引起的。我们将激子效应与单个粒子理论方法进行比较。我们表明，2D材料的激子特性导致光学响应函数的频率依赖性发生了巨大变化。我们还发现，在MOS2的情况下，与钴薄膜相近，激发校正将光学响应提高了两个因子。
In this paper we develop the excitonic theory of Kerr rotation angle in a two-dimensional (2D) transition metal dichalcogenide at zero magnetic field. The finite Kerr angle is induced by the interplay between spin-orbit splitting and proximity exchange coupling due to the presence of a ferromagnet. We compare the excitonic effect with the single particle theory approach. We show that the excitonic properties of the 2D material lead to a dramatic change in the frequency dependence of the optical response function. We also find that the excitonic corrections enhance the optical response by a factor of two in the case of MoS2 in proximity to a Cobalt thin film.
