Effective field investigation of dynamic phase transitions for site diluted Ising ferromagnets driven by a periodically oscillating magnetic field

TL;DR

This study uses effective field theory to analyze the dynamic phase transitions of a site-diluted honeycomb Ising ferromagnet under a periodic magnetic field, revealing reentrant behavior and a dynamic tricritical point.

Contribution

It introduces a detailed EFT-based analysis of dynamic phase transitions in diluted Ising models driven by oscillating fields, highlighting the effects of dilution on phase behavior.

Findings

Reentrant phase transitions observed.

Dynamic tricritical point identified and its disappearance with dilution.

Phase diagrams mapped as functions of temperature and Hamiltonian parameters.

Abstract

Dynamic behavior of a site diluted Ising ferromagnet in the presence of periodically oscillating magnetic field has been analyzed by means of the effective field theory (EFT). Dynamic equation of motion have been solved for a honeycomb lattice ($z=3$) with the help of a Glauber type stochastic process. The global phase diagrams and the variation of the corresponding dynamic order parameter as a function of the Hamiltonian parameters and temperature has been investigated in detail and it has been shown that the system exhibits reentrant phenomena, as well as a dynamic tricritical point which disappears for sufficiently weak dilution.