Vortices in the presence of a nonmagnetic atom impurity in 2D XY ferromagnets

TL;DR

This paper investigates how nonmagnetic impurities affect vortex configurations in 2D XY ferromagnets, revealing that impurities create a repulsive potential that influences vortex behavior.

Contribution

It introduces a model analyzing the impact of spin vacancies on vortex solutions, highlighting the impurity-induced repulsive potential in 2D XY ferromagnets.

Findings

Impurities generate a repulsive potential for vortices.

Vortex behavior is significantly altered by nonmagnetic atom impurities.

The model explains vortex-impurity interactions in 2D XY systems.

Abstract

Using a model of nonmagnetic impurity potential, we have examined the behavior of planar vortex solutions in the classical two-dimensional XY ferromagnets in the presence of a spin vacancy localized out of the vortex core. Our results show that a spinless atom impurity gives rise to an effective potential that repels the vortex structure.