Critical properties of the three-dimensional Ising model with quenched disorder |
| |
Authors: | Akai Kurbanovich Murtazaev Albert Babaevich Babaev |
| |
Institution: | a Institute of Physics, Daghestan Scientific Center, Russian Academy of Sciences, Makhachkala, 367003 Daghestan, Russia b Daghestan State University, Makhachkala, 367025 Daghestan, Russia |
| |
Abstract: | The static critical properties of the three-dimensional Ising model with quenched disorder are studied by the Monte-Carlo (MC) method on a simple cubic lattice, in which the quenched disorder is distributed as nonmagnetic impurities by the canonical manner. The calculations are carried out for systems with periodic boundary conditions and spin concentrations p=1.0; 0.95; 0.9; 0.8; 0.7; 0.6. The systems of non-linear sizes L×L×L, L=20-60 are researched. On the basis of the finite-size scaling (FSS) theory, the static critical exponents of specific heat α, susceptibility γ, magnetization β, and an exponent of the correlation radius in a studied interval of concentrations p are calculated. It is shown that the three-dimensional Ising model with quenched disorder has two regimes of the critical behavior universality in a dependence on nonmagnetic impurities. |
| |
Keywords: | 75 40 Cx 75 40 Mg |
本文献已被 ScienceDirect 等数据库收录! |
|