FIELD-DRIVEN INTERFACE DYNAMICS OF A RANDOM SOFT-SPIN ISING-MODEL

Authors
USADEL KD JOST M
Citation
Kd. Usadel et M. Jost, FIELD-DRIVEN INTERFACE DYNAMICS OF A RANDOM SOFT-SPIN ISING-MODEL, Journal of physics. A, mathematical and general, 26(8), 1993, pp. 1783-1787
Citations number
13
Categorie Soggetti
Physics
Journal title
Journal of physics. A, mathematical and general → ACNP
ISSN journal
03054470
Volume
26
Issue
8
Year of publication
1993
Pages
1783 - 1787
Database
ISI
SICI code
0305-4470(1993)26:8<1783:FIDOAR>2.0.ZU;2-Y
Abstract
The kinetics of an interface between spin-up and spin-down domains in a soft-spin Ising model with quenched random fields and driving magnet ic field H is studied numerically within a discrete time dynamics at z ero temperature. Spins are updated in parallel starting from a flat in terface. It is found that for fields smaller than a threshold field H( c) the interface is pinned while above H(c) the mean velocity of the i nterface increases proportional to (H - H(c)) for two- and three-dimen sional systems.