Phase Diagram of a Diluted Triangular Lattice Ising Antiferromagnet in a Field

TL;DR

This study explores how external magnetic fields and random site dilution influence the phase transitions and magnetization in a frustrated triangular lattice Ising antiferromagnet, revealing complex phase diagrams.

Contribution

It introduces an effective-field theory with correlations to analyze the combined effects of magnetic field and dilution on the phase behavior of the system.

Findings

Peculiar phase diagrams emerge from the interplay of field and dilution.

Magnetization processes are significantly affected by frustration and dilution.

Phase transitions depend sensitively on temperature, field, and dilution levels.

Abstract

Magnetization processes and phase transitions in a geometrically frustrated triangular lattice Ising antiferromagnet in the presence of an external magnetic field and a random site dilution are studied by the use of an effective-field theory with correlations. We find that the interplay between the applied field and the frustration-relieving dilution results in peculiar phase diagrams in the temperature-field-dilution parameter space.