Current-driven domain wall motion in thin ferromagnetic wires
强关联电子
2007-05-23 v2 介观与纳米尺度物理
摘要
The coupling between a current and a Bloch wall is examined in the half-metal limit of the double exchange model. The conduction electrons transfer angular momentum to the Bloch wall with 100% efficiency in the absence of pinning. The wall is displaced without distortion with velocity proportional to the current. In the presence of a pinning potential either the angular momentum is destroyed by the perpendicular component of the anisotropy field or is converted to coherent magnons. A moving wall has its velocity reduced by pinning. The expression for the velocity agrees surprisingly well with experiment.
引用
@article{arxiv.cond-mat/0311039,
title = {Current-driven domain wall motion in thin ferromagnetic wires},
author = {S. E. Barnes and S. Maekawa},
journal= {arXiv preprint arXiv:cond-mat/0311039},
year = {2007}
}
备注
4 pages 1 figure