Monte Carlo study of first-order transition in Heisenberg fcc antiferromagnet

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Nearest-neighbor Heisenberg antiferromagnet on a face-centered cubic lattice is studied by extensive Monte Carlo simulations in zero magnetic field. The parallel tempering algorithm is utilized, which allows to overcome a slow relaxation of the magnetic order parameter and fully equilibrate moderate size clusters with up to N ~ 7*10^3 spins. By collecting energy and order parameter histograms on clusters with up to N ~ 2*10^4 sites we accurately locate the first-order transition point at T_c=0.4459(1)J.
5 pages, 5 figures

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Statistical Mechanics, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/25845

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0502255
 http://arxiv.org/abs/cond-mat/0502255
 JETP Lett. 81, 236 (2005)
 doi:10.1134/1.1921323

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arXiv