The Open UniversitySkip to content
 

Geometrically Tailored Skyrmions at Zero Magnetic Field in Multilayered Nanostructures

Ho, Pin; Tan, Anthony K.C.; Goolaup, S.; Gonzalez Oyarce, A.L.; Raju, M.; Huang, L.S.; Soumyanarayanan, Anjan and Panagopoulos, C. (2019). Geometrically Tailored Skyrmions at Zero Magnetic Field in Multilayered Nanostructures. Physical Review Applied, 11(2), article no. 024064.

Full text available as:
[img]
Preview
PDF (Version of Record) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (3MB) | Preview
DOI (Digital Object Identifier) Link: https://doi.org/10.1103/PhysRevApplied.11.024064
Google Scholar: Look up in Google Scholar

Abstract

Magnetic skyrmions are chiral spin structures recently observed at room temperature in multilayer films. Their topological stability will enable high scalability in confined geometries—a sought-after attribute for device applications. Despite numerous theoretical studies examining sub-100-nm Néel skyrmions in nanostructures, in practice their ambient stability and evolution with confinement and their magnetic parameters remain to be established. Here we present the zero-field stabilization of sub-100-nm room-temperature Néel-textured skyrmions confined in Ir/Fe(x)/Co(y)/Pt nanodots over a wide range of magnetic and geometric parameters. The zero-field skyrmion size, here as small as approximately 50 nm, can be tailored by a factor of 4 with variation of dot size and magnetic interactions. Crucially, skyrmions with differing thermodynamic stability exhibit an unexpected dichotomy in confinement phenomenologies. These results establish skyrmion phenomenology in multilayer nanostructures, and prompt the synergistic use of magnetic and geometric parameters to achieve desired properties in devices.

Item Type: Journal Item
Copyright Holders: 2019 American Physical Society
ISSN: 2331-7019
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 60466
Depositing User: Vikram Goolaup
Date Deposited: 16 Apr 2019 09:51
Last Modified: 19 Apr 2019 21:17
URI: http://oro.open.ac.uk/id/eprint/60466
Share this page:

Metrics

Altmetrics from Altmetric

Citations from Dimensions

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU