Phase diagram of the Ising square lattice with competing interactions

A. Kalz (), A. Honecker, S. Fuchs and T. Pruschke

The European Physical Journal B: Condensed Matter and Complex Systems, 2008, vol. 65, issue 4, 533-537

Abstract: We restudy the phase diagram of the 2D-Ising model with competing interactions J 1 on nearest neighbour and J 2 on next-nearest neighbour bonds via Monte-Carlo simulations. We present the finite temperature phase diagram and introduce computational methods which allow us to calculate transition temperatures close to the criticalpoint at J 2 =J 1 /2. Further on we investigate the character of the different phase boundariesand find that the transition is weakly first order formoderate J 2 > J 1 /2. Copyright Springer 2008

Keywords: 05.50.+q Lattice theory and statistics including Ising; Potts models; etc; 75.10.Hk Classical spin models; 64.60.De Statistical mechanics of model systems (Ising model; Potts model; field-theory models; Monte Carlo techniques; etc) (search for similar items in EconPapers)
Date: 2008
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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DOI: 10.1140/epjb/e2008-00359-6

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