Synchronization of the Self-Oscillations of the Magnetic Vortices in Exchange-Coupled Ferromagnetic Disks

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Аннотация

The low-frequency (gyrotropic) self-oscillations of the magnetic vortices in interacting ferromagnetic disks, which are caused by a spin-polarized current, are studied by numerical simulation. Various magnetization oscillation modes depending on the configuration of the magnetic state of the system are considered. The influence of the pumping current nonuniformity on the phase difference of the vortex gyration in neighboring disks is investigated. The overlap of the disks is shown to increase the interaction between the vortices and, hence, to decrease the dephasing of the vortex core oscillations. The prospects of using overlapping disks to ensure phase synchronization of arrays of spin-transfer vortex oscillators are discussed.

Авторлар туралы

D. Tatarskiy

Institute for Physics of Microstructures, Russian Academy of Sciences; Lobachevsky State University of Nizhny Novgorod

Email: tatarsky@ipmras.ru
607680, Nizhny Novgorod, Russia; 603950, Nizhny Novgorod, Russia

V. Mironov

Institute for Physics of Microstructures, Russian Academy of Sciences

Email: tatarsky@ipmras.ru
607680, Nizhny Novgorod, Russia

A. Fraerman

Institute for Physics of Microstructures, Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: tatarsky@ipmras.ru
607680, Nizhny Novgorod, Russia

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