# Entropy of the diluted antiferromagnetic Ising models on the frustrated lattices using the Wang-Landau method

## TL;DR

This paper employs the Wang-Landau Monte Carlo method to accurately compute the entropy of diluted antiferromagnetic Ising models on frustrated lattices, revealing nonmonotonic residual entropy behavior and comparing it with theoretical approximations.

## Contribution

It introduces a detailed computational analysis of dilution effects on frustrated lattices using the Wang-Landau algorithm, providing new insights into entropy behavior.

## Key findings

- Residual entropy shows nonmonotonic dependence on dilution.
- Differences in dilution effects between pyrochlore and other frustrated lattices.
- Validation of Wang-Landau results against generalized Pauling approximation.

## Abstract

We use a Monte Carlo simulation to study the diluted antiferromagnetic Ising model on the frustrated lattices including the pyrochlore lattice to show the dilution effects. Using the Wang-Landau algorithm, which directly calculates the energy density of states, we accurately calculate the entropy of the system. We discuss the nonmonotonic dilution concentration dependence of residual entropy for the antiferromagnetic Ising model on the pyrochlore lattice, and compare it to the generalized Pauling approximation proposed by Ke et al. [Phys. Rev. Lett. 99, 137203 (2007)]. We also investigate other frustrated systems, the antiferromagnetic Ising model on the triangular lattice and the kagome lattice, demonstrating the difference in the dilution effects between the system on the pyrochlore lattice and that on other frustrated lattices.