Low Temperature Physics: 43, 274 (2017); https://doi.org/10.1063/1.4978455
Fizika Nizkikh Temperatur: Volume 43, Number 2 (February 2017), p. 334-345    ( to contents , go back )

Vortex structure of the magnetic solitons

A.S. Kovalev

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Pr. Nauky, Kharkiv 61103, Ukraine

V. N. Karazin National University, Kharkiv 61077, Ukraine
E-mail: kovalev@ilt.kharkov.ua
pos Анотація:

Received November 17, 2016

Abstract

The soliton-like excitations of general form in 2D easy-plane ferromagnets are researched in the framework of classical model. The corresponding evolution equations and their soliton solutions are obtained. We demonstrate that these excitations have a vortex structure and transform into quadrupole vortex states with the growth of excitation amplitude. These states are characterized with the two dynamical parameters: the soliton velocity and its internal precession frequency. The passage of the vortex soliton to the limit of the vortex dipole, magnetic lamp and magnon droplet is analyzed. The obtained results are compared with the information about the solitons in the corresponding 1D magnetic systems.

PACS: 75.10 – b General theory and models of magnetic ordering;
PACS: 75.30.Gw Magnetic anisotropy;
PACS: 75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects.

Key words: weakly dispersive media, easy-plane ferromagnets, dynamical solitons, rotary waves, Lieb states, magnetic vortex, vortex dipole, vortex quadrupole.

Published online: December 26, 2016

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