Wang-Landau study of the critical behaviour of the bimodal 3D-Random Field Ising Model

Details Wang-Landau study of the critical behaviour of the bimodal 3D-Random Field Ising Model Wang-Landau study of the critical behaviour of the bimodal 3D-Random Field Ising Model

2007-02-16

arxiv.org/abs/cond-mat/0702398v2

Physica A 387, 2793-2801 (2008)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1016/j.physa.2008.01.021

We apply the Wang-Landau method to the study of the critical behaviour of the three dimensional Random Field Ising Model with a bimodal probability distribution. Our results show that for high values of the random field intensity the transition is first order, characterized by a double-peaked energy probability distribution at the transition temperature. On the other hand, the transition looks continuous for low values of the field intensity. In spite of the large sample to sample fluctuations observed, the double peak in the probability distribution is always present for high fields

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