Three-dimensional chiral skyrmions with attractive interparticle interactions

TL;DR

This paper introduces a new class of three-dimensional chiral skyrmions in magnetic materials, highlighting their structure, attractive interactions, and potential bound states, expanding understanding of topological solitons in condensed matter physics.

Contribution

It presents the first theoretical description of 3D chiral skyrmions with attractive interactions in the cone phase of cubic helimagnets, including their regular solutions and bound states.

Findings

Skyrmions have an axisymmetric core with an asymmetric shell.

Skyrmions attract each other, forming bound states.

Regular solutions for skyrmions in the cone phase are derived.

Abstract

We introduce a new class of isolated three-dimensional skyrmion that can occur within the cone phase of chiral magnetic materials. These novel solitonic states consist of an axisymmetric core separated from the host phase by an asymmetric shell. These skyrmions attract one another. We derive regular solutions for isolated skyrmions arising in the cone phase of cubic helimagnets and investigate their bound states.