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 B
Paper
Equilibration of random-field Ising systems
Abstract
The equilibration of Ising systems in random magnetic fields at low temperatures (T) following a quench from high T is studied in the framework of a simple solid-on-solid model. The rate at which ordered domains in the model grow with time in any dimension (d) is estimated as a function of the random-field strength, the exchange strength, and T, on the basis of an approximate analogy to the problem of a one-dimensional random walk in a random medium. Domains are argued to grow logarithmically with time for all d. This result has a simple interpretation in terms of energy barriers which must be surmounted in the equilibration process. © 1984 The American Physical Society.