Simple Simulation of Magnetic Structure for Nanoclusters

TL;DR

This paper presents a simple discrete model to simulate magnetic structures in chromium nanoclusters, confirming non-collinear magnetic moments and their planar orientation, while also examining thermal effects on anti-ferromagnetic order.

Contribution

It introduces a straightforward simulation approach that reproduces complex magnetic behaviors observed in chromium nanoclusters, building on prior DFT findings.

Findings

Magnetic moments are mostly non-collinear and planar.

Thermal fluctuations can disrupt anti-ferromagnetic order.

Model aligns with local-spin DFT results.

Abstract

A simple discrete model for magnetic structures of chromium nanoclusters, found with the help of local-spin DFT by Kohl and Bertsch, still confirms their conclusion that in most of the clusters the magnetic moments are not collinear; instead, in most of the cases they are oriented within one plane. We also simulate the destruction of the anti-ferromagnetic ordering by thermal fluctuations.