About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Physical Review Letters
Paper
Interface motion and nonequilibrium properties of the random-field ising model
Abstract
The dynamics of a continuum interface model in a random medium are studied and the results applied to the random-field Ising model. We find that if the dimensionality d<5, the interface will move only if a force beyond a finite depinning threshold Fch4(5-d) is applied, where h is the random field strength. Thus, when the random-field Ising model is quenched to low temperatures, there is a critical value Rc1h4(5-d) for the average radius of curvature R of the domain walls. If R>Rc, the domain structure is frozen. If R<Rc, the domain structure evolves until RRc. © 1984 The American Physical Society.