Spin waves in a ferromagnetic nanotube in the presence of a spin-polarized current

Author

Kulish, Volodymyr V.

Author_Institution

Dept. of Gen. & Exp. Phys., Nat. Tech. Univ. of Ukraine KPI, Kiev, Ukraine

fYear

2015

fDate

21-24 April 2015

Firstpage

61

Lastpage

64

Abstract

Dipole-exchange spin waves in a ferromagnetic nanotube in the presence of a spin-polarized electric current are investigated. The exchange interaction, the dipole-dipole magnetic interaction, the anisotropy effects, the dissipation effects and the influence of the spin-polarized current are taken into account. For above-described spin waves, an equation for the magnetic potential and a dispersion relation are obtained. It is shown that the presence of the spin-polarized current can strengthen or weaken the effective dissipation, or lead to a spin wave generation. The condition of such generation is obtained.

Keywords

dispersion relations; electron spin polarisation; exchange interactions (electron); ferromagnetism; magnetic anisotropy; nanomagnetics; nanotubes; spin waves; anisotropy effects; dipole-dipole magnetic interaction; dipole-exchange spin waves; dispersion relation; dissipation effects; exchange interaction; ferromagnetic nanotube; magnetic potential; spin-polarized electric current; Magnetic multilayers; Magnetization; Magnetomechanical effects; Magnetostatic waves; Magnetostatics; Perpendicular magnetic anisotropy; dipole-exchange theory; ferromagnetic nanotube; spin wave; spin-polarized current;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Nanotechnology (ELNANO), 2015 IEEE 35th International Conference on

Conference_Location

Kiev

Type

conf

DOI

10.1109/ELNANO.2015.7146835

Filename

7146835