Current-induced motion of a domain wall in magnetic nanowires
arXiv:cond-mat/0509574 · doi:10.1103/PhysRevB.74.054403
Abstract
The dynamics of current-induced motion of a magnetic domain wall in a quasi-one-dimensional ferromagnet with both easy-axis and easy-plane anisotropy, is studied. We pay a special attention to the case of a sharp domain wall, and calculate the spin torque created by the electric current. The torque has two components, one of which is acting as a driving force for the motion of the domain wall while the other distorts its shape, forcing thus the magnetic moments to deviate from the easy plane.
12 pages with 6 figures