Interlayer-interaction dependence of latent heat in the Heisenberg model on a stacked triangular lattice with competing interactions

Ryo Tamura, Shu Tanaka

研究成果: Article

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We study the phase transition behavior of a frustrated Heisenberg model on a stacked triangular lattice by Monte Carlo simulations. The model has three types of interactions: the ferromagnetic nearest-neighbor interaction J 1 and antiferromagnetic third nearest-neighbor interaction J 3 in each triangular layer and the ferromagnetic interlayer interaction J⊥. Frustration comes from the intralayer interactions J1 and J3. We focus on the case that the order parameter space is SO(3)×C3. We find that the model exhibits a first-order phase transition with breaking of the SO(3) and C3 symmetries at finite temperature. We also discover that the transition temperature increases but the latent heat decreases as J ⊥/J1 increases, which is opposite to the behavior observed in typical unfrustrated three-dimensional systems.

元の言語English
記事番号052138
ジャーナルPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
88
発行部数5
DOI
出版物ステータスPublished - 2013 11 26
外部発表Yes

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

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