Noise-induced synchronization in spin torque nano oscillators
Noise-induced synchronization in spin torque nano oscillators
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DOI：
10.1063/1.3680537
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发表时间：
2012-04-01
影响因子：
3.2
通讯作者：
Kimura, T.
中科院分区：
文献类型：
--
作者：
Nakada, K.;Yakata, S.;Kimura, T.
利用宏观自旋近似下的Landau-Lifshitz-Gilbert-Slonczewski（LLGS）方程，数值研究了噪声电流注入下自旋矩纳米振荡器（STNOs）的随机磁化动力学.共同的噪声电流注入到两个STNO被发现诱导相位同步，其中两个STNO显示同相或反相位锁定的进动取决于高斯白色噪声的序列。噪声引起的同步可以是用于控制STNO阵列中的输出功率的可能应用。(C)2012年美国物理学会。[doi：10.1063/1.3680537]
We have numerically studied the stochastic magnetization dynamics of a pair of spin torque nano oscillators (STNOs) under noisy current injection by using the Landau-Lifshitz-Gilbert-Slonczewski (LLGS) equation with a macro-spin approximation. Common noisy current injection into both STNOs is found to induce the phase synchronizations, where two STNOs show in-phase or anti-phase locked precession depending on the sequences of Gaussian white noise. The noise-induced synchronization could be a possible application for controlling the output power in the array of the STNOs. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3680537]