Crossover between fast and slow excitation of magnetization by spin torque
Mesoscale and Nanoscale Physics
2016-06-20 v1 Other Condensed Matter
Abstract
A crossover between two mechanisms destabilizing the magnetization in equilibrium by the spin transfer effect is found in a ferromagnetic multilayer consisting of an in-plane magnetized free layer and a perpendicularly magnetized pinned layer, where an in-plane magnetic field is applied, and electric current flows from the pinned to the free layer. A fast transition from the in-plane to the out-of-plane state occurs in the low-field region, whereas a slow transition with small-amplitude oscillation becomes dominant in the high-field region. On the other hand, only the fast transition mechanism appears for the opposite current direction.
Keywords
Cite
@article{arxiv.1606.05375,
title = {Crossover between fast and slow excitation of magnetization by spin torque},
author = {Tomohiro Taniguchi},
journal= {arXiv preprint arXiv:1606.05375},
year = {2016}
}
Comments
4 pages, 4 figures