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

M. V. Gvozdikova·M. E. Zhitomirsky
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Abstract

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.

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M. V. Gvozdikova, M. E. Zhitomirsky. 2005-02-10. Monte Carlo study of first-order transition in Heisenberg fcc antiferromagnet. https://doi.org/10.1134/1.1921323

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