Spin-polarized current-driven switching in permalloy nanostructures

被引：23
|
作者：
Martinez, E
Torres, L
Lopez-Diaz, L
Carpentieri, M
Finocchio, G
机构：
[1] Univ Salamanca, Fac Ciencias, Dept Fis Aplicada, Salamanca 37008, Spain
[2] Univ Messina, Fac Ingn, Dipartamento Fis Mat & Tecnol Fis Avanzate, I-98166 Messina, Italy
来源：
JOURNAL OF APPLIED PHYSICS | 2005年 / 97卷 / 10期
关键词：
D O I：
10.1063/1.1847292
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Spin-polarized current-driven switching processes in a rectangular-shaped permalloy spin valve at deep submicron dimension have been studied by means of micromagnetic modeling. The effect of the magnetostatic antiferromagnetic coupling between ferromagnetic layers has been analyzed. The antiferromagnetic coupling promotes the switching both from parallel to antiparallel transition and backward. Systematic simulations were carried out in order to determine the minimum pulse features needed to switch the magnetization of the free layer. Reversal from antiparallel to parallel state requires shorter and less intense pulses than the reciprocal transition due to the asymmetric character of the spin-polarized current torque. (c) 2005 American Institute of Physics.
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页数：3
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