Stacked Triangular XY Antiferromagnets: End of a Controversial Issue on the Phase Transition

V. Thanh Ngo (1) , H. T. Diep (2)

1 IOP - Institute of Physics, Hanoi
2 LPTM - UMR 8089 - Laboratoire de Physique Théorique et Modélisation

We show in this paper by using the Wang-Landau flat-histogram Monte Carlo method that the phase transition in the XY stacked triangular antiferromagnet is clearly of first-order, confirming results from latest Monte Carlo simulation and from a nonperturbative renormalization group, putting an end to a long-standing controversial issue.

Mots clés: Frustration; Phase transition XY spins; Monte Carlo simulation

Domaines: Mécanique statistique [cond-mat.stat-mech]

V. Thanh Ngo, H. T. Diep. Stacked Triangular XY Antiferromagnets: End of a Controversial Issue on the Phase Transition. 2007. ⟨hal-00184765⟩