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Herald of Omsk University Series Psychology

Численное исследование критической релаксации сильно неупорядоченной модели Изинга с точечными дефектами

Pavel Vladimirovich Prudnikov, Vladimir V. Prudnikov, А. В. Чабров

Published Jan 1, 2010• 0 citations
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Abstract

Using Monte Carlo simulations the nonequilibrium critical behavior of the three-dimensional site-diluted Ising model is studied by short-time dynamic method in strong disorder influence case. The dynamic exponent z as well as static exponents (3 and v are determined.

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Herald of Omsk University Series Psychology•Jan 1, 2009•0 citations
Using Monte Carlo simulations it was studied the non-equilibrium critical relaxation in the three-dimensional site-diluted Ising model with spin concentration p=0.80. The values of exponents for power-law time dependence of magnetization and Binder cumulant were determined with the use of corrections to scaling method. The dynamic critical exponent z, the ratio of static exponents p7v and exponent of correction to scaling со were calculated. They demonstrate a good agreement with results of theoretical-field description and results of experimental investigations for diluted Ising-like systems.
Using Monte Carlo simulations it was studied the non-equilibrium critical evolution in the three-dimensional site-diluted weakly and strongly disordered Ising model with spin concentrations p=0.80 and 0.60. The values of exponents for power-law time dependence of magnetization and the autocorrelation function were determined. The values of two independent dynamic critical exponents z and θ were calculated. They demonstrate a good agreement with results of theoretical-field description and results of experimental investigations for weakly diluted Ising-like systems, but show visible differences with values of these exponents for strongly disordered Ising systems.