Hysteresis of nanocylinders with Dzyaloshinskii-Moriya interaction

Rebecca Carey, Marijan Beg, Maximilian Albert, Marc-Antonio Bisotti, David Cortés-Ortuño, Mark Vousden, Weiwei Wang, Ondrej Hovorka, Hans Fangohr

Published 2016-06-16Version 1

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.