%0 Journal Article
%A Maiorano, A.
%A Martín Mayor, Víctor
%A Ruiz Lorenzo, J. J.
%A Tarancón, A.
%T Weak first-order transition in the three-dimensional site-diluted Ising antiferromagnet in a magnetic field
%D 2007
%@ 1098-0121
%U https://hdl.handle.net/20.500.14352/52131
%X 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 on the lattice size for a generic  disordered first-order phase transition.
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