Physics of the Solid State
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Calculation of relative dispersions of magnetization, heat capacity and susceptibility in a two-dimensional weakly diluted 3-state Potts model
Ataeva G. Ya. 1, Babaev A. B. 1,2, Murtazaev A. K.1
1Amirkhanov Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, Makhachkala, Russia
2Dagestan Federal Research Center, Russian Academy of Sciences, Makhachkala, Russia
Email: ataeva20102014@mail.ru

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Using the Monte Carlo method, the relative dispersions of magnetization Rm, heat capacity Rc and susceptibility Rchi are calculated for a weakly diluted 3-state Potts model on a square lattice at a spin concentration p=0.90. It is revealed that the introduction of disorder in the form of nonmagnetic impurities into the two-dimensional Potts model leads to non-zero values for Rm, Rc, Rchi at the critical point. It is found that these values decrease markedly for systems with linear dimensions L>40. Keywords: nonmagnetic impurities, dispersion, Potts model, Monte Carlo method, phase transition. DOI: 10.61011/PSS.2023.07.56414.55
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