Physics of the Solid State
Phase transitions in a two-dimensional antiferromagnetic Potts model on a kagome lattice
Ramazanov M.K.1, Murtazaev A.K.1, Magomedov M.A.1, Rizvanova T.R. 1
1Dagestan Federal Research Center, Russian Academy of Sciences, Makhachkala, Russia
Email: sheikh77@mail.ru
The phase transitions and thermodynamic properties of the two-dimensional antiferromagnetic Potts model with the number of spin states q=4 on the kagome lattice are studied by the Monte Carlo method, taking into account the exchange interactions of the first J1 and second J2 nearest neighbors. The studies were carried out for the value of the interaction of the second nearest neighbors in the interval -1.0≤ J_2≤0.0. An analysis of the character of phase transitions has been carried out. It is shown that in the interval -1.0≤ J_2≤-0.1, a second-order phase transition is observed, while at J_2=0.0, frustrations disturb the order in the system and lead to the disappearance of the phase transition Keywords: Frustration, phase transition, Monte Carlo method, Potts model.
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