Diameter-independent skyrmion Hall angle observed in chiral magnetic multilayers

Abstract

Magnetic skyrmions are topologically non-trivial nanoscale objects. Their topology, which originates in their chiral domain wall winding, governs their unique response to a motion inducing force. When subjected to an electrical current, the chiral winding of the spin texture leads to a deflection of the skyrmion trajectory, characterised by an angle with respect to the applied force direction. This skyrmion Hall angle is predicted to be skyrmion diameter dependent. In contrast, our experimental study finds that the skyrmion Hall angle is diameter independent for skyrmions with diameters ranging from 35 to 825 nm. At an average velocity of 6 ± 1 ms−1, the average skyrmion Hall angle was measured to be 9° ± 2°. In fact, the skyrmion dynamics is dominated by the local energy landscape such as materials defects and the local magnetic configuration.

Metadata

Item Type:	Article
Authors/Creators:	Zeissler, K https://orcid.org/0000-0002-2698-3493 Finizio, S https://orcid.org/0000-0002-1792-0626 Barton, C https://orcid.org/0000-0003-4366-5726 Huxtable, AJ https://orcid.org/0000-0002-1671-3369 Massey, J https://orcid.org/0000-0002-7793-7008 Raabe, J https://orcid.org/0000-0002-2071-6896 Sadovnikov, AV https://orcid.org/0000-0002-8847-2621 Nikitov, SA https://orcid.org/0000-0002-2413-7218 Brearton, R https://orcid.org/0000-0002-8204-3674 Hesjedal, T https://orcid.org/0000-0001-7947-3692 Laan, GVD https://orcid.org/0000-0001-6852-2495 Rosamond, MC Linfield, EH https://orcid.org/0000-0001-6912-0535 Burnell, G https://orcid.org/0000-0002-9486-0639 Marrows, CH https://orcid.org/0000-0003-4812-6393
Copyright, Publisher and Additional Information:	© The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Keywords:	cond-mat.mes-hall; cond-mat.mes-hall
Dates:	Accepted: 15 November 2019 Published (online): 22 January 2020 Published: 22 January 2020
Institution:	The University of Leeds
Academic Units:	The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds)
Depositing User:	Symplectic Publications
Date Deposited:	05 Dec 2019 15:09
Last Modified:	17 Dec 2024 15:29
Status:	Published
Publisher:	Nature Research
Identification Number:	10.1038/s41467-019-14232-9
Related URLs:	Dataset
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:154143