Publications and Research
Document Type
Article
Publication Date
2013
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.
Comments
This work was originally published in Physical Review B - Condensed Matter and Materials Physics, and is available at DOI: 10.1103/PhysRevB.87.144420