Abstract.
We restudy the phase diagram of the 2D-Ising model with competing interactions J1 on nearest neighbour and J2 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 J2 = J1/2. Further on we investigate the character of the different phase boundariesand find that the transition is weakly first order formoderate J2 > J1/2.
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Kalz, A., Honecker, A., Fuchs, S. et al. Phase diagram of the Ising square lattice with competing interactions. Eur. Phys. J. B 65, 533 (2008). https://doi.org/10.1140/epjb/e2008-00359-6
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DOI: https://doi.org/10.1140/epjb/e2008-00359-6