Correlation-induced reentrant spin-glass behavior in an Ising model with random interactions

J. O. Indekeu, Ph. de Smedt, R. Dekeyser
1984 Physical Review B (Condensed Matter)  
An Ising spin-glass calculation is presented showing that stable "reentrant" spin-glass behavior, which is absent in mean-field theory, occurs when local correlations are taken into account. The method is a simple Kikuchi approximation starting from the exactly soluble classical spin-glass model proposed by van Hemmen. The resulting phase diagram is in good agreement with experiment.
doi:10.1103/physrevb.30.495 fatcat:do7lyimucrco7adpse4g2oau5i