磁性金属和半导体中自旋转移现象的理论( Theory of spin transfer phenomena in magnetic metals and semiconductors )

AS Nú?Ez AH Macdonald Theoretical or Mathematical/ ferromagnetism magnetic switching magnetisation metals semiconductors spin polarised transport spin-orbit interactions two-dimensional electron gas/ spin transfer phenomena magnetic metals semiconductors inhomogeneous magnetic system total spin conservation magnetization precession switching spin-orbit interaction toy-model two-dimensional electron gas ferromagnet/ A7225 Spin polarized transport A7560E Magnetization curves, hysteresis, Barkhausen and related effects A7170E Spin-orbit coupling, Zeeman, Stark and strain splitting (condensed matter)

我们提出了当电流流过非均匀磁系统时发生的自旋转移效应的一般理论。我们的理论不依赖于对总自旋守恒的要求，能够评估特定几何结构中电流诱导的磁化进动和切换是否相干发生，并且能够估计存在自旋轨道相互作用时自旋转移的有效性。我们用一个具有Rashba自旋-轨道相互作用的二维电子-气体铁磁体玩具模型来说明我们的理论。

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