Weak first order transition in the three-dimensional site-diluted Ising antiferromagnet in a magnetic field
Disordered Systems and Neural Networks
2009-11-13 v3
Abstract
We perform intensive numerical simulations of the three-dimensional site-diluted Ising antiferromagnet in a magnetic field at high values of the external applied field. Even if data for small lattice sizes are compatible with second-order criticality, the critical behavior of the system shows a crossover from second-order to first-order behavior for large system sizes, where signals of latent heat appear. We propose "apparent" critical exponents for the dependence of some observables with the lattice size for a generic (disordered) first-order phase transition.
Keywords
Cite
@article{arxiv.0705.1517,
title = {Weak first order transition in the three-dimensional site-diluted Ising antiferromagnet in a magnetic field},
author = {A. Maiorano and V. Martín-Mayor and J. J. Ruiz-Lorenzo and A. Tarancón},
journal= {arXiv preprint arXiv:0705.1517},
year = {2009}
}
Comments
Final version, accepted for publication