Magnetic vortices induced by a moving tip
Other Condensed Matter
2013-01-23 v2 Statistical Mechanics
Abstract
A two-dimensional easy-plane ferromagnetic substrate, interacting with a dipolar tip which is magnetised perpendicular with respect to the easy plane is studied numerically by solving the Landau-Lifshitz Gilbert equation. Due to the symmetry of the dipolar field of the tip, in addition to the collinear structure a magnetic vortex structure becomes stable. It is robust against excitations caused by the motion of the tip. We show that for high excitations the system may perform a transition between the two states. The influence of domain walls, which may also induce this transition, is examined.
Cite
@article{arxiv.1207.3225,
title = {Magnetic vortices induced by a moving tip},
author = {Martin P. Magiera and Alfred Hucht and Haye Hinrichsen and Silvio R. Dahmen and Dietrich E. Wolf},
journal= {arXiv preprint arXiv:1207.3225},
year = {2013}
}
Comments
6 pages, 7 figures