Universidad Complutense de Madrid
E-Prints Complutense

Weak first-order transition in the three-dimensional site-diluted Ising antiferromagnet in a magnetic field

Impacto

Downloads

Downloads per month over past year

Maiorano, A. and Martín Mayor, Víctor and Ruiz Lorenzo, J. J. and Tarancón, A. (2007) Weak first-order transition in the three-dimensional site-diluted Ising antiferromagnet in a magnetic field. Physical review B, 76 (6). ISSN 1098-0121

[img]
Preview
PDF
923kB

Official URL: http://dx.doi.org/10.1103/PhysRevB.76.064435


URLURL Type
https://journals.aps.orgPublisher


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 on the lattice size for a generic disordered first-order phase transition.


Item Type:Article
Additional Information:

© 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.

Uncontrolled Keywords:Critical-behavior; 3 dimensions; Monte-Carlo; Phase-transitions; Random-systems; Model; Universality.
Subjects:Sciences > Physics > Physics-Mathematical models
ID Code:45420
Deposited On:22 Nov 2017 10:43
Last Modified:22 Nov 2017 10:43

Origin of downloads

Repository Staff Only: item control page