Implementation of a nonequilibrium Green's function method to calculate spin-transfer torque

被引：41
|
作者：
Heiliger, Christian [1 ,2 ]
Czerner, Michael [3 ]
Yavorsky, Bogdan Yu. [3 ]
Mertig, Ingrid [3 ]
Stiles, Mark D. [1 ]
机构：
[1] NIST, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA
[2] Univ Maryland, Maryland Nanoctr, College Pk, MD 20742 USA
[3] Univ Halle Wittenberg, Dept Phys, D-06099 Halle, Germany
来源：
JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 07期
关键词：
D O I：
10.1063/1.2835071
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present an implementation of the steady state Keldysh approach in a Green's function multiple scattering scheme to calculate the nonequilibrium spin density. This density is used to obtain the spin-transfer torque in junctions showing the magnetoresistance effect. We use our implementation to study the spin-transfer torque in metallic Co/Cu/Co junctions. (c) 2008 American Institute of Physics.
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页数：3
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