Effective anisotropy of thin nanomagnets: beyond the surface anisotropy approach

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We study the effective anisotropy induced in thin nanomagnets by the nonlocal demagnetization field (dipole-dipole interaction). Assuming a magnetization independent of the thickness coordinate, we reduce the energy to an inhomogeneneous onsite anisotropy. Vortex solutions exist and are ground states for this model. We illustrate our approach for a disk and a square geometry. In particular, we obtain good agreement between spin-lattice simulations with this effective anisotropy and micromagnetic simulations.
ReVTeX, 14 pages, 6 figures

Keywords

Strongly Correlated Electrons

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/146668

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0705.1555
 http://arxiv.org/abs/0705.1555
 Phys. Rev. B 76, 174428 (2007)
 doi:10.1103/PhysRevB.76.174428

Collections

arXiv