Antiskyrmions and Bloch Skyrmions in Magnetic Dresselhaus Metals

TL;DR

This paper provides a microscopic understanding of how antiskyrmions and Bloch skyrmions can be stabilized and tuned in Dresselhaus spin-orbit coupled magnetic metals, revealing a connection between these topological textures.

Contribution

It introduces a microscopic model explaining the stabilization and transformation of antiskyrmions into Bloch skyrmions in magnetic metals with Dresselhaus spin-orbit coupling.

Findings

Antiskyrmions can be stabilized in Dresselhaus metals.

Sign of hopping integral can tune antiskyrmions into Bloch skyrmions.

The results explain skyrmion formation in magnetic Weyl semimetals.

Abstract

We present a microscopic electronic description of how antiskyrmions can be stabilized in a Dresselhaus spin-orbit coupled magnetic metal. Furthermore, we show that the antiskyrmions can be tuned into Bloch skyrmions via a change in sign of hopping integral. The results are based on the state of the art hybrid Monte Carlo simulations. Origin of such topological textures is understood via an effective spin-only model. Our results uncover a novel connection between two very distinct topological spin textures of immense current interest, and present a microscopic explanation of skyrmion formation reported recently in certain magnetic Weyl semimetals.