Hysteresis of nanocylinders with Dzyaloshinskii-Moriya interaction

TL;DR

This paper investigates the stability and manipulation of magnetic skyrmions in cylindrical nanostructures using three-dimensional micromagnetic hysteresis simulations, highlighting their potential for high-density storage applications.

Contribution

It introduces a detailed hysteresis study of skyrmions in nanocylinders, demonstrating how to access these states through practical measurement protocols.

Findings

Skyrmions can be stabilized in nanocylinders with varying thickness.

Hysteresis loops reveal field and thickness dependence of skyrmion states.

Methodology enables experimental observation of skyrmions in confined geometries.

Abstract

The potential for application of magnetic skyrmions in high density storage devices provides a strong drive to investigate and exploit their stability and manipulability. Through a three-dimensional micromagnetic hysteresis study, we investigate the question of existence of skyrmions in cylindrical nanostructures of variable thickness. We quantify the applied field and thickness dependence of skyrmion states, and show that these states can be accessed through relevant practical hysteresis loop measurement protocols. As skyrmionic states have yet to be observed experimentally in confined helimagnetic geometries, our work opens prospects for developing viable hysteresis process-based methodologies to access and observe skyrmionic states.