Compensation temperature in spin-$1/2$ Ising trilayers: A Monte Carlo study

TL;DR

This study uses Monte Carlo simulations to analyze the magnetic properties and compensation phenomena in a layered spin-1/2 Ising system with mixed ferromagnetic and antiferromagnetic interactions, providing phase diagrams and insights for material design.

Contribution

It introduces a detailed Monte Carlo analysis of a trilayer Ising model with mixed interactions, revealing conditions for compensation phenomena and phase diagram mappings.

Findings

Identification of compensation temperatures as functions of model parameters

Phase diagrams showing regions with and without compensation phenomena

Influence of interaction parameters on magnetic behavior

Abstract

We study the magnetic and thermodynamic properties of a spin-$1/2$ Ising system containing three layers, each of which is composed exclusively of one out of two possible types of atoms, \textbf{A} or \textbf{B}. The \textbf{A-A} and \textbf{B-B} bonds are ferromagnetic while the \textbf{A-B} bonds are antiferromagnetic. The study is performed through Monte Carlo simulations using the Wolff algorithm and the data are analyzed with the aid of the multiple-histogram reweighting technique and finite-size scaling tools. We verify the occurrence of a compensation phenomenon and obtain the compensation and critical temperatures of the model as functions of the Hamiltonian parameters. The influence of each parameter on the overall behavior of the system is discussed in detail and we present our results in the form of phase diagrams dividing the parameter space in regions where the compensation phenomenon is present or absent. Our results may provide invaluable information for experimentalists seeking to build materials with desired characteristics.