Magnetic domain walls displacement : automotion vs. spin-transfer torque
Mesoscale and Nanoscale Physics
2015-05-19 v1
Abstract
The magnetization dynamics equation predicts that a domain wall that changes structure should undergo a displacement by itself - automotion - due to the relaxation of the linear momentum that is associated with the wall structure. We experimentally demonstrate this effect in soft nanostrips,transforming under spin transfer torque a metastable asymmetric transverse wall into a vortex wall. Displacements more than three times as large as under spin transfer torque only are measured for 1~ns pulses. The results are explained by analytical and numerical micromagnetics. Their relevance to domain wall motion under spin transfer torque is emphasized.
Keywords
Cite
@article{arxiv.1007.5233,
title = {Magnetic domain walls displacement : automotion vs. spin-transfer torque},
author = {Jean-Yves Chauleau and Raphaël Weil and André Thiaville and Jacques Miltat},
journal= {arXiv preprint arXiv:1007.5233},
year = {2015}
}