Theory of spin glasses. II

Abstract

For pt.I see ibid., vol.5, p.965 (1975). The paper continues the study of dilute magnetic alloys using the model of a randomly-sited solution of dipoles with distance-dependent and hence randomly-signed forces. The time dependence of the system is studied above and below the critical temperature and the self-correlation time of a dipole is shown to tend to infinity as T to Tc from above. Comparable results are obtained from below, where it is shown that the system settles into one of many states of equilibrium. The behaviour near T=0 is shown to be dominated by domain structure.