Open AccessAb initio расчеты электронных свойств, частотная дисперсия диэлектрических коэффициентов и край оптического поглощения монокристаллов TlInS-=SUB=-2-=/SUB=-<Sn>
Author(s) -
С.Н. Мустафаева,
М. М. Асадов,
С.С. Гусейнова,
Н.З. Гасанов,
В.Ф. Лукичев
Publication year - 2022
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2022.06.52388.299
Subject(s) - potts model , square lattice , ab initio , impurity , phase transition , condensed matter physics , lattice (music) , state (computer science) , physics , chemistry , thermodynamics , statistical physics , mathematics , quantum mechanics , ising model , algorithm , acoustics
The method of computer simulation was used to study phase transitions in a two-dimensional site-diluted 3-state Potts model. Systems with linear dimensions L×L=N, L=10÷160 at spin concentrations p=1.00, 0.80 are considered. The obtained numerical data indicate that in the pure 3-state Potts model on a square lattice, a second-order phase transition is observed in accordance with the theory. The introduction of disorder in the form of non-magnetic impurities (p=0.80) in the Potts model with q=3 preserves the second-order phase transition.