Order as an effect of disorder

J. Villain , R. Bidaux , J.-P. Carton , R. Conte

A generalized frustrated Ising model on a two-dimensional lattice is considered. This model is paramagnetic at zero temperature but ferromagnetic provided 0 < T < T c. The effect of dilution on this system is also investigated, and long range order is shown to be restored in the dilute model under certain conditions involving concentration, temperature and interactions which are discussed in comparison with usual percolation.

Mots clés: Ising model

Domaines: Articles anciens

J. Villain, R. Bidaux, J.-P. Carton, R. Conte. Order as an effect of disorder. Journal de Physique, 1980, 41 (11), pp.1263-1272. ⟨10.1051/jphys:0198000410110126300⟩. ⟨jpa-00208953⟩