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Thermodynamical Properties of the Diluted Transverse Ising Model with Anisotropic Coupling Constants
Author(s) -
Plascak J. A.
Publication year - 1983
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221200124
Subject(s) - ising model , anisotropy , transverse plane , coupling constant , coupling (piping) , condensed matter physics , thermodynamics , transverse field , physics , constant (computer programming) , thermal , materials science , quantum mechanics , metallurgy , structural engineering , computer science , engineering , programming language
The thermodynamical properties of the site‐ and bond‐diluted transverse Ising model with anisotropic coupling constants are studied by using a variational procedure based on Bogolyubov's inequality. Within this approach the thermal behaviour of the system is obtained in the entire range of temperature (0 ≤ T < ∞). The results for the critical temperature, critical transverse field, and critical concentration are, in several cases, comparable to the constant‐coupling approximation.