Effect of Quenched Nonmagnetic Impurities on the Phase Transitions in a Three-Dimensional Potts Model

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...

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Veröffentlicht in:	Journal of experimental and theoretical physics 2021-06, Vol.132 (6), p.917-921
Hauptverfasser:	Murtazaev, A. K., Babaev, A. B.
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Classical and Quantum Gravitation Disorder Elementary Particles Histograms Impurities Medical research Medicine, Experimental Monte Carlo method Monte Carlo simulation Order Particle and Nuclear Physics Phase Transition in Condensed System Phase transitions Physics Physics and Astronomy Quantum Field Theory Quenching Relativity Theory Solid State Physics Three dimensional models
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Beschreibung
Zusammenfassung:	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.
ISSN:	1063-7761 1090-6509
DOI:	10.1134/S1063776121060054