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Implementation of the "hyperdynamics of infrequent events" method for acceleration of thermal switching dynamics of magnetic moments

Sanchez, F.G., Chantrell, R.W. and Chubykalo-Fesenko, O.A. (2004) Implementation of the "hyperdynamics of infrequent events" method for acceleration of thermal switching dynamics of magnetic moments. IEEE TRANSACTIONS ON MAGNETICS. pp. 2140-2142. ISSN 0018-9464

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Abstract

For acceleration of the calculations of thermal magnetic switching, we report the use of the Voter method, recently proposed in chemical physics (also called "hyperdynamics of the infrequent events"). The method consists of modification of the magnetic potential so that the transition state remains unchanged. We have found that the method correctly describes the mean first passage time even in the case of small damping (precessional case) and for an oblique angle between the anisotropy and the field directions. Due to the costly evaluation of the lowest energy eigenvalue, the actual acceleration depends on its fast computation. In the current implementation, it is limited to intermediate time scale and to small system size.

Item Type: Article
Copyright, Publisher and Additional Information: © 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: computational magnetics, numerical methods, spin dynamics and relaxation
Academic Units: The University of York > Physics (York)
Depositing User: Repository Officer
Date Deposited: 18 Dec 2006
Last Modified: 17 Oct 2013 14:25
Published Version: http://dx.doi.org/10.1109/TMAG.2004.830397
Status: Published
Refereed: Yes
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/1838

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