论文标题
二维共线抗铁磁铁中的自旋光藻素效应
Spin photogalvanic effect in two-dimensional collinear antiferromagnets
论文作者
论文摘要
自旋光子效应（SPGE）是一种有效的方法，可以通过无接触式和超快速的方式通过光激发产生自旋电流。在二维（2d）共线抗磁性（AFM）中，可以保留时间反转（T）和反转（i）对称性（即Ti对称性），我们发现两种磁性弹性在相反的方向上均具有相反的旋转，我们发现光的光电电流在两个方向上均具有相反的旋转。净充电电流。基于第一原理计算，我们表明两个实验合成的2D Collinear AFM材料，单层MNPS $ _3 $和BILAYER CRCL $ _3 $，请托管所需的对称和支持的Sizize size sizaige Spge。 2D共线AFM材料中预测的SPGE使它们成为纳米自旋设备的有前途的平台。
Spin photogalvanic effect (SPGE) is an efficient method to generate a spin current by photoexcitation in a contactless and ultra-fast way. In two-dimensional (2D) collinear antiferromagnetic (AFM) materials that preserve the combined time-reversal (T) and inversion (I) symmetry (i.e., TI symmetry), we find that the photogalvanic currents in two magnetic sublattices carry different kinds of spins and propagate in opposite direction if the spin-orbit coupling is negligible, resulting in a pure spin current without net charge current. Based on the first-principles calculations, we show that two experimentally synthesized 2D collinear AFM materials, monolayer MnPS$_3$ and bilayer CrCl$_3$, host the required symmetry and support sizable SPGE. The predicted SPGE in 2D collinear AFM materials makes them promising platforms for nano spintronics devices.
