Short-time dynamics of a family of XY noncollinear magnets

Details Short-time dynamics of a family of XY noncollinear magnets Short-time dynamics of a family of XY noncollinear magnets

2005-11-27

arxiv.org/abs/cond-mat/0511640v3

Phys. Rev. E74, 016109 (2006)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 6 figures, largely revised version

Scientific paper

10.1103/PhysRevE.74.016109

Critical scaling and universality in the short-time dynamics for antiferromagnetic models on a three-dimensional stacked triangular lattice are investigated using Monte Carlo simulation. We have determined the critical point by searching for the best power law for the order parameter as a function of time and measured the critical exponents. Our results indicate that it is possible to distinguish weak first-order from second-order phase transitions and confirm that XY antiferromagnetic systems undergo a (weak) first order phase transition.

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