RT Journal Article
T1 Weak first-order transition in the three-dimensional site-diluted Ising antiferromagnet in a magnetic field
A1 Maiorano, A.
A1 Martín Mayor, Víctor
A1 Ruiz Lorenzo, J. J.
A1 Tarancón, A.
AB 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.
PB American Physical Society
SN 1098-0121
YR 2007
FD 2007-08-31
LK https://hdl.handle.net/20.500.14352/52131
UL https://hdl.handle.net/20.500.14352/52131
LA eng
NO © 2007 American Physical Society. This work has been partially supported by MEC  Contracts Nos. BFM2003-08532, FISES2004-01399, FIS2004- 05073, and FIS2006-08533, by the European Commission  Contract No. HPRN-CT-2002-00307, and by UCM-BCSH. We are grateful to T. Jörg and L. A. Fernández for interesting discussions.
NO MEC, Spain
NO European Commission
NO UCM-BCSH
DS Docta Complutense
RD 3 may 2024