XXVIII International Symposium ''Nanophysics and Nanoelectronics'', Nizhny Novgorod, March 11-15, 2024
Magnetism, spintronics

Influence of the magnetic field of a spin-polarized current on gyrotropic autooscillations of vortex nanooscillators

D. A. Tatarskii^ab, O. L. Ermolaeva^a, V. L. Mironov^a, A. A. Fraerman<sup>a

a</sup> Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia
^b National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia

Abstract: The results of micromagnetic modeling of gyrotropic self-oscillations of a vortex spin-transfer nanooscillator (VSTN) taking into account the magnetic field of the pump current are presented. The dependences of the core orbital radius, resonant frequency, and gyration rate of the magnetic vortex on the pump current density are studied for different values of the ratio of the thickness of the VSTN stack to its diameter. It is shown that the gyration parameters depend significantly on the mutual direction of the vortex magnetic field and the magnetization in the shell of the magnetic vortex. The conditions for phase synchronization of magnetostatically coupled VSTN chains are discussed.

Keywords: magnetic vortex, vortex spin-transfer nanooscillators, Oersted magnetic field, phase synchronization.

Received: 18.04.2024
Revised: 18.04.2024
Accepted: 08.05.2024

DOI: 10.61011/PSS.2024.08.59042.56HH