Critical behavior of two-dimensional magnetic lattice gas model

L. S. Li, W. Chen, W. Dong and X. S. Chen ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2011, vol. 80, issue 2, 189-193

Abstract: Using Monte Carlo simulations and finite-size scaling, we investigate the critical behavior of two-dimensional magnetic lattice gas at densities ρ=0.90, 0.95, 1.0. There is a ferromagnetic phase transition at each density. As expected, the critical temperature T c depends on system density ρ. Unexpectedly, there is a density dependence of the critical exponent of correlation length ν. For densities ρ=0.90,0.95,1.0, we obtain the inverse of critical exponent 1/ν=0.835(5), 0.905(5), 1.00(1) respectively. It is found that the ratios of critical exponent β/ν and γ/ν of magnetization and susceptibility are independent of density. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2011

Date: 2011
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DOI: 10.1140/epjb/e2011-10948-9

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