Spin transport theory in ferromagnet/semiconductor systems with noncollinear magnetization configurations
Spin transport theory in ferromagnet/semiconductor systems with noncollinear magnetization configurations
复制标题
DOI：
10.1103/physrevb.81.045321
复制
发表时间：
2009-10
影响因子：
3.7
通讯作者：
Yang Song;H. Dery
中科院分区：
文献类型：
--
作者：
Yang Song;H. Dery
我们提出了一个全面的理论，自旋输运的非简并半导体是在多个铁磁终端接触。在半导体中的自旋动力学的一般，非共线的磁化配置和方法的扰动期间进行了研究，以确定从电流信号的各种配置。传统的Landauer-B“uttiker描述自旋输运通过肖特基接触推广使用的非线性$I\text{\ensuremath{-}}V$关系，它是扩展考虑非相干输运机制。该理论被用来分析一个三端横向结构的自旋积累轮廓的显着差异时，发现该模型与传统模型的结果进行比较。
We present a comprehensive theory of spin transport in a nondegenerate semiconductor that is in contact with multiple ferromagnetic terminals. The spin dynamics in the semiconductor is studied during a perturbation of a general, noncollinear magnetization configuration and a method is shown to identify the various configurations from current signals. The conventional Landauer-B\"uttiker description for spin transport across Schottky contacts is generalized by the use of a nonlinearized $I\text{\ensuremath{-}}V$ relation, and it is extended by taking into account noncoherent transport mechanisms. The theory is used to analyze a three terminal lateral structure where a significant difference in the spin accumulation profile is found when comparing the results of this model with the conventional model.