Interlayer-Interaction Dependence of Latent Heat in the Heisenberg Model on a Stacked Triangular Lattice with Competing Interactions

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 $J_{\perp }$. Frustration comes from the intralayer interactions $J_1$ and $J_3$. We focus on the case that the order parameter space is SO(3)$\times C_3$. 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 $J_{\perp }/J_1$ increases, which is opposite to the behavior observed in typical unfrustrated three-dimensional systems.

10 pages, 8 figures, to appear in Physical Review E

References in corpus (13)

• Spin current and magneto-electric effect in non-collinear magnets
• Supersolid hardcore bosons on the triangular lattice
• Quadrupolar correlations and spin freezing in S = 1 triangular lattice antiferromagnets
• Chirality and $Z_2$ vortices in an Heisenberg spin model on the kagomé lattice
• Successive phase transitions at finite temperatures of the supersolid in the three-dimensional extended Bose-Hubbard model
• High Field ESR in the Two-Dimensional Triangular Lattice Antiferromagnet NiGa2S4
• First-Order Transition to Incommensurate Phase with Broken Lattice Rotation Symmetry in Frustrated Heisenberg Model
• Phase Transition in Potts Model with Invisible States
• Slow Relaxation of Spin Structure in Exotic Ferromagnetic Phase of Ising-like Heisenberg Kagome Antiferromagnets
• Phase Transition of Generalized Ferromagnetic Potts Model - Effect of Invisible States -
• Non-monotonic Dynamics in Frustrated Ising Model with Time-Dependent Transverse Field
• Second-order phase transition in the Heisenberg model on a triangular lattice with competing interactions
• Electron localization/delocalization in incommensurate helical magnets

Cited by in corpus (1)

• Thermodynamics of anisotropic triangular magnets with ferro- and antiferromagnetic exchange