Phase Transitions and the Magnetic Properties of the Potts Model with Four Spin States on a Hexagonal Lattice in Low Magnetic Fields

Phase transitions and the magnetic properties of the two-dimensional Potts model with the four spin states on a hexagonal lattice in low magnetic fields are studied using the replica exchange algorithm of the Monte Carlo method. The studies are performed in the magnetic field range of with a step of...

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Veröffentlicht in:JETP letters 2021-12, Vol.114 (11), p.693-698
Hauptverfasser: Ramazanov, M. K., Murtazaev, A. K., Magomedov, M. A., Mazagaeva, M. K.
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Sprache:eng
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Zusammenfassung:Phase transitions and the magnetic properties of the two-dimensional Potts model with the four spin states on a hexagonal lattice in low magnetic fields are studied using the replica exchange algorithm of the Monte Carlo method. The studies are performed in the magnetic field range of with a step of 0.5. For this H  range, the magnetic structures of the ground state are determined. It is found that the first-order phase transition occurs in the whole magnetic field range under study, except for , at which the second-order phase transition takes place. In the framework of such model, it is demonstrated that the applied magnetic field can lead to a change in the order of the phase transition.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364021230119