Spin transport and magnetoresistance in ferromagnet/superconductor/ferromagnet spin valves

被引：35

作者：

Morten, JP ^{[1
]}

Brataas, A

Belzig, W

机构：

[1] Norwegian Univ Sci & Technol, Dept Phys, N-7491 Trondheim, Norway

[2] Univ Basel, Dept Phys & Astron, CH-4056 Basel, Switzerland

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.72.014510

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider spin transport and spin relaxation in superconductors using the quasiclassical theory of superconductivity. We include spin relaxation due to spin-orbit interaction as well as magnetic impurities, and show that the energy dependence of the spin-flip rate is different for these two mechanisms. In ferromagnet-superconductor-ferromagnet systems made of Co and Al, interface resistances can be small compared to bulk resistances. This simplifies the description of transport in Co/Al/Co spin valves, for which we numerically calculate the temperature and Al length dependence of the magnetoresistance.

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页数：6

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