Crossover effects in the bond-diluted Ising model in three dimensions

We investigate by Monte Carlo simulations the critical properties of the three-dimensional bond-diluted Ising model. The phase diagram is determined by locating the maxima of the magnetic susceptibility and is compared to mean-field and effective-medium approximations. The calculation of the size-de...

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Bibliographic Details
Published in:Computer physics communications 2002-08, Vol.147 (1), p.427-430
Main Authors: Berche, P.E., Chatelain, C., Berche, B., Janke, W.
Format: Article
Language:English
Subjects:
Classical spin models
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Critical phenomena
Disorder
Exact sciences and technology
General theory and models of magnetic ordering
Ising model
Magnetic properties and materials
Monte Carlo simulations
Physics
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Summary:We investigate by Monte Carlo simulations the critical properties of the three-dimensional bond-diluted Ising model. The phase diagram is determined by locating the maxima of the magnetic susceptibility and is compared to mean-field and effective-medium approximations. The calculation of the size-dependent effective critical exponents shows the competition between the different fixed points of the model as a function of the bond dilution.
ISSN:0010-4655
1879-2944
DOI:10.1016/S0010-4655(02)00319-3