Pseudo-Temperature Monte Carlo Simulation for Ground State of Antiferromagnetic Spin-S Ising Model on Triangular Lattice

摘要

We investigated the critical behavior of spin-S antiferromagnetic Ising model on a triangular lattice by means of Monte Carlo simulations with pseudo temperature. The critical index eta varies with the spin-value as predicted in other studies for this system. Critical spin value S_c is estimated to be 4 from a calculation for the sublattice magnetization and an order parameter introduced in a similar way as in the hard hexagon model.