An Extended Mean Field Model for Spin Glasses: Antiferromagnetic-Spin Glass Systems
Open Access
- 1 November 1988
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 80 (5) , 827-839
- https://doi.org/10.1143/ptp.80.827
Abstract
An extended mean field model, which describes coupled spin glass (SG) systems, is introduced and applied to antiferromagnetic (AF)-SG systems. It is an extended model of a simple AF-SG system examined recently by Fyodorov et al. in the sense that intra-sublattice interactions of a Sherrington-Kirkpartick type are also taken into account. It is shown that the present AF-SG model reproduces at least qualitatively many interesting aspects such as the reentrant transitions under external fields which are observed in the recent experiments on the Ising AF-SG systems FexMn1-xTio3 and FexMg1-xCl2.Keywords
This publication has 1 reference indexed in Scilit:
- A Simple hypothesis for the spin glass phase of the pnfinite-ranged SK modelJournal de Physique Lettres, 1980