Demagnetization Borne Microscale Skyrmions

TL;DR

This paper explores new methods for generating and customizing nanoscale skyrmions in magnetic systems, demonstrating their formation through numerical simulations on various geometries using cobalt parameters.

Contribution

It introduces novel approaches for skyrmion creation and shows their numerical realization in different small-scale magnetic geometries.

Findings

Skyrmions can be numerically generated in various geometries.

Application of magnetic fields induces skyrmionic states.

Skyrmions observed in simulations range from 40 nm to 120 nm.

Abstract

Magnetic systems are an exciting realm of study that is being explored on smaller and smaller scales. One extremely interesting magnetic state that has gained momentum in recent years is the skyrmionic state. It is characterized by a vortex where the edge magnetic moments point opposite to the core. Although skyrmions have many possible realizations, in practice, creating them in a lab is a difficult task to accomplish. In this work, new methods for skyrmion generation and customization are suggested. Skyrmionic behavior was numerically observed in minimally customized simulations of spheres, hemisphere, ellipsoids, and hemi-ellipsoids, for typ- ical Cobalt parameters, in a range from approximately 40 nm to 120 nm in diameter simply by applying a field.