Short-time dynamics of a family of XY noncollinear magnets

被引：16

作者：

Bekhechi, S. ^{[1
]}

Southern, B. W.

Peles, A.

Mouhanna, D.

机构：

[1] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada

[2] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

[3] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

[4] Univ Paris 06, Lab Phys Theor Mat Condensee, F-75252 Paris 05, France

来源：

PHYSICAL REVIEW E | 2006年 / 74卷 / 01期

关键词：

D O I：

10.1103/PhysRevE.74.016109

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

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 accompanied by pseudocritical scaling.

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页数：5

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