Ab initio investigation of the topological Hall effect caused by magnetic skyrmions in Pd/Fe/Ir(111)

TL;DR

This study uses ab-initio calculations to analyze how magnetic skyrmions in Pd/Fe/Ir(111) influence the topological Hall effect, considering skyrmion size and disorder effects.

Contribution

It provides a detailed ab-initio analysis of the topological Hall effect caused by magnetic skyrmions in a specific film system, incorporating effects of size and disorder.

Findings

Skyrmion size affects the topological Hall angle.

Disorder influences the magnitude of the Hall effect.

Ab-initio methods effectively model skyrmion-induced transport phenomena.

Abstract

We present an ab-initio computational analysis of the topological Hall effect arising from stable magnetic skyrmions in the Pd/Fe/Ir(111) film using non-collinear spin density functional calculations within the Korringa-Kohn-Rostoker (KKR) Green function method. The semiclassical Boltzmann transport equation is employed for the resistivity and the Hall angle of the system. We explore the influence of the skyrmion size and the impact of disorder on the topological Hall angle.