论文标题
过渡金属二分法中自旋电流的空间分离
Spatial separation of spin currents in transition metal dichalcogenides
论文作者
论文摘要
从理论上讲，由于三角形翘曲，我们从理论上预测了过渡金属二分法（TMD）中自旋极化弹道电流的空间分离。我们在原型的3末端弹道装置中量化了电荷载体电流的自旋极化，在该设备中，不同的导线收集了旋转和旋转的电荷载体。我们表明，当前自旋极化的大小在很大程度上取决于电荷载体能量和方向相对于设备中的晶体学取向。我们研究了晶格缺陷和障碍对观察到的自旋极化的（负）。我们的调查为观察无缺陷的反转不变材料中的旋转歧视提供了途径。
We theoretically predict spatial separation of spin-polarized ballistic currents in transition metal dichalcogenides (TMDs) due to trigonal warping. We quantify the effect in terms of spin polarization of charge carrier currents in a prototypical 3-terminal ballistic device where spin-up and spin-down charge carriers are collected by different leads. We show that the magnitude of the current spin polarization depends strongly on the charge carrier energy and the direction with respect to crystallographic orientations in the device. We study the (negative) effect of lattice imperfections and disorder on the observed spin polarization. Our investigation provides an avenue towards observing spin discrimination in a defect-free time reversal-invariant material.
