Open AccessИсследование фазовых переходов и термодинамических свойств модели Поттса с C-=SUB=-q-=/SUB=-=4 на гексагональной решетке с взаимодействиями вторых ближайших соседей
Author(s) -
М. К. Рамазанов,
А. К. Муртазаев,
М. А. Магомедов,
М.К. Мазагаева
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.03.49011.621
Subject(s) - antiferromagnetism , frustration , condensed matter physics , potts model , ferromagnetism , monte carlo method , hexagonal lattice , phase transition , ground state , statistical physics , physics , lattice (music) , quantum mechanics , mathematics , statistics , acoustics
Magnetic structures of the ground state, phase transitions and thermodynamic properties of the 2D ferromagnetic Potts model with the number of spin states q = 4 on a hexagonal lattice with next-nearest neighbors interactions are investigated by the Monte Carlo method based on the Wang-Landau algorithm. It is shown that taking into account the antiferromagnetic interactions of the next-nearest neighbors leads to the appearance of frustration and a violation of magnetic ordering. The orders of the phase transitions are investigated using the Binder fourth-order cumulant method and histogram analysis of data. It is established that a first-order transition is observed in the model being investigated.