Mutual synchronization of nano-oscillators driven by pure spin current

被引：10
|
作者：
Urazhdin, S. [1 ]
Demidov, V. E. [2 ,3 ]
Cao, R. [1 ]
Divinskiy, B. [2 ,3 ]
Tyberkevych, V. [4 ]
Slavin, A. [4 ]
Rinkevich, A. B. [5 ]
Demokritov, S. O. [1 ,5 ]
机构：
[1] Emory Univ, Dept Phys, Atlanta, GA 30322 USA
[2] Univ Munster, Inst Appl Phys, D-48149 Munster, Germany
[3] Univ Munster, Ctr Nanotechnol, D-48149 Munster, Germany
[4] Oakland Univ, Dept Phys, Rochester, MI 48309 USA
[5] Russian Acad Sci, Ural Branch, MN Miheev Inst Met Phys, Ekaterinburg 620041, Russia
来源：
APPLIED PHYSICS LETTERS | 2016年 / 109卷 / 16期
基金：
美国国家科学基金会;
关键词：
PHASE-LOCKING; MICROWAVE GENERATION; TORQUE OSCILLATORS; EXCITATION; INJECTION; WAVES;
D O I：
10.1063/1.4964884
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the experimental observation of mutual synchronization of magnetic nano-oscillators driven by pure spin current generated by nonlocal spin injection. We show that the oscillators efficiently synchronize due to the direct spatial overlap of the dynamical modes excited by the spin current, which is facilitated by the large size of the auto-oscillation area inherent to these devices. The synchronization occurs within an interval of the driving current determined by the competition between the dynamic nonlinearity that facilitates synchronization and the short-wavelength magnetic fluctuations enhanced by the spin current that suppress synchronization. The demonstrated synchronization effects can be utilized to control the spatial and spectral characteristics of the dynamical states induced by the spin currents. Published by AIP Publishing.
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页数：5
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