We study the role of thermal fluctuations on the spin dynamics of a thin permalloy film with a focus on the behavior of spin torque and find that the thermally assisted spin torque results in new aspects of the magnetization dynamics. In particular, we uncover the formation of a finite, spin torque-induced, in-plane magnetization component. The orientation of the in-plane magnetization vector depends on the temperature and the spin-torque coupling. We investigate and illustrate that the variation of the temperature leads to a thermally-induced rotation of the in-plane magnetization.
@article{arxiv.1311.3120,
title = {Thermally activated in-plane magnetization rotation induced by spin torque},
author = {L. Chotorlishvili and Z. Toklikishvili and A. Sukhov and P. P. Horley and V. K. Dugaev and V. R. Vieira and S. Trimper and J. Berakdar},
journal= {arXiv preprint arXiv:1311.3120},
year = {2013}
}