Inhomogeneous States in a Small Magnetic Disk with Single-Ion Surface Anisotropy
Mesoscale and Nanoscale Physics
2009-11-07 v2
Abstract
We investigate analytically and numerically the ground and metastable states for easy-plane Heisenberg magnets with single-ion surface anisotropy and disk geometry. The configurations with two half-vortices at the opposite points of the border are shown to be preferable for strong anisotropy. We propose a simple analytical description of the spin configurations for all values of a surface anisotropy. The effects of lattice pinning leads to appearance of a set of metastable configurations.
Cite
@article{arxiv.cond-mat/0211265,
title = {Inhomogeneous States in a Small Magnetic Disk with Single-Ion Surface Anisotropy},
author = {V. E. Kireev and B. A. Ivanov},
journal= {arXiv preprint arXiv:cond-mat/0211265},
year = {2009}
}
Comments
10 pages, 7 figures; submitted to Phys. Rev. B