Phase transition properties of three-dimensional systems described by diluted potts model

作者：Murtazaev A K^*; Babaev A B; Aznaurova G Ya

来源：Journal of Experimental and Theoretical Physics, 2009, 109(3): 442-445.

DOI：10.1134/S1063776109090088

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 alpha, gamma, beta, and nu for specific heat, susceptibility, magnetization, and correlation length, respectively.

• 出版日期2009-9