## Abstract

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_{âŠ¥}. Frustration comes from the intralayer interactions J_{1} and J_{3}. We focus on the case that the order parameter space is SO(3)×C_{3}. We find that the model exhibits a first-order phase transition with breaking of the SO(3) and C_{3} symmetries at finite temperature. We also discover that the transition temperature increases but the latent heat decreases as J _{âŠ¥}/J_{1} increases, which is opposite to the behavior observed in typical unfrustrated three-dimensional systems.

Original language | English |
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Article number | 052138 |

Journal | Physical Review E - Statistical, Nonlinear, and Soft Matter Physics |

Volume | 88 |

Issue number | 5 |

DOIs | |

Publication status | Published - 2013 Nov 26 |

Externally published | Yes |

## ASJC Scopus subject areas

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