Phase transition properties of three-dimensional systems described by diluted potts model |
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Authors: | A K Murtazaev A B Babaev and G Ya Aznaurova |
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Institution: | 1.Institute of Physics, Dagestan Scientific Center,Russian Academy of Sciences,Makhachkala, Dagestan,Russia |
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Abstract: | Monte Carlo simulations are performed to analyze phase transitions in three-dimensional systems described by the 3-state Potts
model with nonmagnetic impurities. Numerical results are presented for systems with spin concentrations p = 1.00, 0.95, 0.90, 0.80, 0.70, and 0.65 on lattices of size L varying between 20 and 44. Binder’s cumulant analysis shows that the introduction of quenched disorder in the form of non-magnetic
impurities induces a crossover from first-order to second-order phase transition. The finite-size scaling method is used to
calculate the static critical exponents α, γ, β, and ν for specific heat, susceptibility, magnetization, and correlation length,
respectively. |
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Keywords: | |
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