Abstract
The influence of a weak disorder in the form of quenched nonmagnetic impurities on the phase transitions (PTs) in a three-dimensional 5-state Potts model is studied using the cluster Wolff algorithm of the Monte Carlo method. Systems with linear sizes L = 10–120 at spin concentrations p = 1.00 and 0.80 are considered. Using the fourth-order Binder cumulant method and histogram analysis, we show that the introduction of a weak quenched disorder (p = 0.80) in the form of nonmagnetic impurities changes a first-order PT into a second-order PT.
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Funding
This work was supported by the Russian Foundation for Basic Research, project no. 19-02-00153.
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Translated by K. Shakhlevich
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Murtazaev, A.K., Babaev, A.B. Effect of Quenched Nonmagnetic Impurities on the Phase Transitions in a Three-Dimensional Potts Model. J. Exp. Theor. Phys. 132, 917–921 (2021). https://doi.org/10.1134/S1063776121060054
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DOI: https://doi.org/10.1134/S1063776121060054