Correlation of the angular dependence of spin-transfer torque and giant magnetoresistance in the limit of diffusive transport in spin valves

被引：12
|
作者：
Gmitra, M. [1 ]
Barnas, J. [2 ]
机构：
[1] Safarik Univ, Inst Phys, Kosice 04001, Slovakia
[2] Adam Mickiewicz Univ, Dept Phys, PL-61614 Poznan, Poland
来源：
PHYSICAL REVIEW B | 2009年 / 79卷 / 01期
关键词：
giant magnetoresistance; spin valves;
D O I：
10.1103/PhysRevB.79.012403
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Angular variation in giant magnetoresistance and spin-transfer torque in metallic spin-valve heterostructures is analyzed theoretically in the limit of diffusive transport. It is shown that the spin-transfer torque in asymmetric spin valves can vanish in noncollinear magnetic configurations, and such a nonstandard behavior of the torque is generally associated with a nonmonotonic angular dependence of the giant magnetoresistance, with a global minimum at a noncollinear magnetic configuration.
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页数：4
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