Skyrmion Generation by Current

TL;DR

This paper demonstrates through simulations that circulating currents can generate isolated Skyrmions in chiral ferromagnetic materials, advancing the potential for Skyrmion-based information technology.

Contribution

It introduces a method to create Skyrmions using circulating currents without external magnetic fields, a novel approach for Skyrmion manipulation.

Findings

Circulating currents can generate Skyrmions in ferromagnetic systems.

Skyrmions can be created without external magnetic fields.

Simulation results support practical Skyrmion control methods.

Abstract

Skyrmions, once a hypothesized field-theoretical object believed to describe the nature of elementary particles, became common sightings in recent years among several non-centrosymmetric metallic ferromagnets. For more practical applications of Skyrmionic matter as carriers of information, thus realizing the prospect of "Skyrmionics", it is necessary to have the means to create and manipulate Skyrmions individually. We show through extensive simulation of the Landau-Lifshitz-Gilbert equation that a circulating current imparted to the metallic chiral ferromagnetic system can create isolated Skyrmionic spin texture without the aid of external magnetic field.