Spin-transfer interactions in exchange-biased spin valves

被引：13
|
作者：
Wei, Zhen [1 ]
Basset, Julien [2 ]
Sharma, Amit [3 ]
Bass, Jack [3 ]
Tsoi, Maxim [1 ]
机构：
[1] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA
[2] Univ Grenoble 1, F-38041 Grenoble, France
[3] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 07期
基金：
美国国家科学基金会;
关键词：
MAGNETIC MULTILAYER; EXCITATION;
D O I：
10.1063/1.3057951
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We extend to a new antiferromagnetic alloy, IrMn, point-contact based studies of the effect of a large current density on the exchange bias at antiferromagnet/ferromagnet (AFM/F) interfaces. Similarly to the case of AFM=CoFe, a negative current density similar to 10(12) A/m(2) injected through the F=CoFe into an IrMn/CoFe interface was found to increase the exchange bias, while a positive current decreased it. The model used to describe the data for FeMn/CoFe, based on predicted current-induced torques on AFM, can explain the new data. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3057951]
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页数：3
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