Amplitude-phase coupling in a spin-torque nano-oscillator

被引：31
|
作者：
Kudo, Kiwamu [1 ]
Nagasawa, Tazumi [1 ]
Sato, Rie [1 ]
Mizushima, Koichi [1 ]
机构：
[1] Toshiba Co Ltd, Ctr Corp Res & Dev, Kawasaki, Kanagawa 2128582, Japan
来源：
JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 07期
关键词：
DRIVEN;
D O I：
10.1063/1.3056407
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The spin-torque nano-oscillator in the presence of thermal fluctuation is described by the normal form of the Hopf bifurcation with an additive white noise. By the application of the reduction method, the amplitude-phase coupling factor, which has a significant effect on the power spectrum of the spin-torque nano-oscillator, is calculated from the Landau-Lifshitz-Gilbert-Slonczewski equation with the nonlinear Gilbert damping. The amplitude-phase coupling factor exhibits a large variation depending on an in-plane anisotropy under the practical external fields. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3056407]
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页数：3
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