Effect of current on magnetization oscillations in the ferromagnet-antiferromagnet junction

被引：0
|
作者：
Yu. V. Gulyaev
P. E. Zilberman
E. M. Epshtein
机构：
[1] Russian Academy of Sciences,Kotel’nikov Institute of Radio Engineering and Electronics
[2] Fryazino Branch,undefined
来源：
Journal of Experimental and Theoretical Physics | 2012年 / 114卷
关键词：
External Magnetic Field; Instability Threshold; Spin Injection; Easy Plane; Magnetization Oscillation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effect of spin-polarized current on the steady-state magnetization and oscillations of antiferromagnet magnetization in a ferromagnetic-antiferromagnetic magnetic junction is analyzed. The macrospin approximation is generalized to describe antiferromagnets. The canted configuration of the antiferromagnet and the resultant magnetic moment are produced by the application of an external magnetic field. The resonance frequency, damping, and threshold current density corresponding to the emergence of instability are calculated. The possibility of generating weakly damped magnetization oscillations in the terahertz range is demonstrated. The effect of fluctuations on the canted configuration of the antiferromagnet is discussed.
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页码：296 / 304
页数：8
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