Related dynamics of magnetic vortexes in five-layer spintransfer nanooscillator

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Abstract

The influence of spin-polarized current and the number of magnetic layers on the coupled dynamics of vortices in small-diameter spin-transfer nanooscillators has been studied. Using the software package for micromagnetic modeling SpinPM, the dependence of the frequency on the current magnitude of the currents at which a stationary mode of coupled oscillations of three vortices is observed is found. For the case of three identical magnetic layers, the possibility of implementing different scenarios of coupled vortex dynamics is shown. It was found that numerical calculations for the case of three magnetic layers yield frequencies of stationary coupled oscillations that are lower than those predicted by theory. Built on effective equations for the coordinates of the vortex center.

About the authors

E. G. Ekomasov

Ufa University of Science and Technology

Email: georgij.antonow@yandex.ru
Russian Federation, st. Zaki Validi, 32, Ufa, 450076

D. F. Neradovsky

Tyumen State University

Email: georgij.antonow@yandex.ru
Russian Federation, st. Volodarskogo, 6, Tyumen, 625003

G. I. Antonov

Ufa University of Science and Technology

Author for correspondence.
Email: georgij.antonow@yandex.ru
Russian Federation, st. Zaki Validi, 32, Ufa, 450076

V. V. Filippova

Ufa University of Science and Technology

Email: georgij.antonow@yandex.ru
Russian Federation, st. Zaki Validi, 32, Ufa, 450076

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