氧化物异质结中的自旋输运行为

(论文)摘 要自旋极化主要指载流子的自旋方向由混乱无序在经过特定的手段或处理后能够一致朝向某个特定方向的现象。在常见的电流中，经常作为导体的铜、银等导电性良好的金属的费米面上自旋向上与自旋向下的电子态密度是相等的，因此表现出来的自旋角动量为 0，电荷成为主导属性而自旋不对电流整体行为造成任何影响。而在自旋流中，自旋与在普通电流中的实际表现中有着相当大的区别：自旋流中的自旋方向与电流中的电荷比较相似，在实验或者应用时表现出来的是它们的净通过量，因此如果是由两组自旋方向相反、运输速度相反，横截面密度相同的载流子组成的纯自旋流，表现出来的电流大小，根据焦耳定律公式，在电路中不会产生热量，即使不是纯自旋流，自旋极化电流产生的热量消耗同样小于相同数目载流子组成电流产生的热量。- I -关键词： 自旋极化，能带，态密度，自旋霍尔效应，反常霍尔效应(论文)Spin transport in oxide heterojunctionAbstractSpin polarization mainly refers to the phenomenon that the spin direction of carriers is chaotically disordered and can be uniformly oriented in a specific direction after being subjected to specific means or processing. In currents, the electron density of the spin-up and spin-down electron states on the Fermi surface of copper, silver and other conductive metals that are often used as conductors are equal, so the spin angular momentum shown is 0, Charge becomes the dominant property and spin does not have any effect on the overall behavior of the current. In the spin current, the spin is quite different from the actual performance in ordinary current: the spin direction in the spin current is similar to the charge in the current, and they are shown in experiments or applications. The net throughput, therefore, if it is a pure spin current consisting of two sets of carriers with opposite spin directions, opposite transport speeds, and the same cross-sectional density, the magnitude of the current shown by Joule ’s law...