2009/10/27 by Yang Song, Hanan Dery · 1 citation
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Magnetic properties of thin films #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.81.045321
published as Phys. Rev. B 81, 045321 (2010) · 17 pages, 10 figures
arxiv created 2009/10/27 · openalex publication_date 2010/01/28 · arxiv updated 2013/05/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.