Title :
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
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;
Conference_Titel :
Electronics and Nanotechnology (ELNANO), 2015 IEEE 35th International Conference on
Conference_Location :
Kiev
DOI :
10.1109/ELNANO.2015.7146835
