Quantum dynamics of vortices in mesoscopic magnetic disks
Mesoscale and Nanoscale Physics
2015-06-12 v1
Abstract
Model of quantum depinning of magnetic vortex cores from line defects in a disk geometry and under the application of an in-plane magnetic field has been developed within the framework of the Caldeira-Leggett theory. The corresponding instanton solutions are computed for several values of the magnetic field. Expressions for the crossover temperature Tc and for the depinning rate \Gamma(T) are obtained. Fitting of the theory parameters to experimental data is also presented.
Keywords
Cite
@article{arxiv.1302.1406,
title = {Quantum dynamics of vortices in mesoscopic magnetic disks},
author = {R. Zarzuela and E. M. Chudnovsky and J. M. Hernandez and J. Tejada},
journal= {arXiv preprint arXiv:1302.1406},
year = {2015}
}
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8 pages