Magnetic behaviors of classical spin model on the Shastry–Sutherland lattice: Monte Carlo simulation

Abstract

We study the magnetic phase diagram of a classical Heisenberg spin model on the Shastry–Sutherland lattice using the Monte Carlo method. The simulated results indicate that the particular collinear phase region can be enlarged due to the implementation of easy-axis anisotropy, leading to the broadening of the magnetization plateau in the classical Heisenberg model. Also, the random exchange term is taken into account to study the effect of inhomogeneity on the steplike magnetization feature. It is indicated that the multi-step magnetic behaviors in the low temperature range remain observable when the inhomogeneity is in the appropriate range.