Injection locking and phase control of spin transfer nano-oscillators
Injection locking and phase control of spin transfer nano-oscillators
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DOI：
10.1103/physrevlett.95.067203
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发表时间：
2005-08-05
影响因子：
8.6
通讯作者：
Katine, JA
中科院分区：
文献类型：
--
作者：
Rippard, WH;Pufall, MR;Katine, JA
我们直接测量了自旋转移振荡器对注入交流电流的锁相。根据输入的相对强度，振荡器锁定远离其自然振荡频率高达数百兆赫的信号。当直流电流在锁定范围内变化时，时域测量表明自旋转移振荡的相位相对于输入在大约 +/- 90 度的范围内变化。这与非线性振荡器注入锁定的一般理论分析非常一致。
We have directly measured phase locking of spin transfer oscillators to an injected ac current. The oscillators lock to signals up to several hundred megahertz away from their natural oscillation frequencies, depending on the relative strength of the input. As the dc current varies over the locking range, time-domain measurements show that the phase of the spin transfer oscillations varies over a range of approximately +/- 90 degrees relative to the input. This is in good agreement with general theoretical analysis of injection locking of nonlinear oscillators.