Current-Induced Magnetic Domain-Wall Motion by Spin Transfer Torque: Collective Coordinate Approach with Domain-Wall Width Variation
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
The spin transfer torque generated by a spin-polarized current can induce the shift of the magnetic domain-wall position. In this work, we study theoretically the current-induced domain-wall motion by using the collective coordinate approach [Gen Tatara and Hiroshi Kohno, Phys. Rev. Lett. 92, 86601 (2004)]. The approach is extended to include not only the domain-wall position and the polarization angle changes but also the domain-wall width variation. It is demonstrated that the width variation affects the critical current.
Keywords
Cite
@article{arxiv.cond-mat/0703569,
title = {Current-Induced Magnetic Domain-Wall Motion by Spin Transfer Torque: Collective Coordinate Approach with Domain-Wall Width Variation},
author = {Soon-Wook Jung and Hyun-Woo Lee},
journal= {arXiv preprint arXiv:cond-mat/0703569},
year = {2007}
}
Comments
13 pages, 3 figures