Monte Carlo study of dynamic phase transition in Ising metamagnet driven by oscillating magnetic field

TL;DR

This study uses Monte Carlo simulations to explore how layered antiferromagnetic Ising systems respond dynamically to oscillating magnetic fields, revealing phase transitions and phase diagram characteristics.

Contribution

It provides new insights into the dynamic phase transition behavior of Ising metamagnet systems under oscillating fields through detailed Monte Carlo analysis.

Findings

Dynamical phase transition observed in layered antiferromagnet.

Phase boundary shrinks with decreasing antiferromagnetic strength.

Results qualitatively match previous mean-field calculations.

Abstract

The dynamical responses of Ising metamagnet (layered antiferromagnet) in the presence of a sinusoidally oscillating magnetic field are studied by Monte Carlo simulation. The time average staggered magnetisation plays the role of dynamic order parameter. A dynamical phase transition was observed and a phase diagram was plotted in the plane formed by field amplitude and temperature. The dynamical phase boundary is observed to shrink inward as the relative antiferromagnetic strength decreases. The results are compared with that obtained from pure ferromagnetic system. The shape of dynamic phase boundary observed to be qualitatively similar to that obtained from previous meanfield calculations.