James C. Loudon
Do Images of Biskyrmions Show Type-II Bubbles?
Loudon, James C.; Twitchett-Harrison, Alison C.; Cortés-Ortuño, David; Birch, Max T.; Turnbull, Luke A.; Štefančič, Aleš; Ogrin, Feodor Y.; Burgos-Parra, Erick O.; Bukin, Nicholas; Laurenson, Angus; Popescu, Horia; Beg, Marijan; Hovorka, Ondrej; Fangohr, Hans; Midgley, Paul A.; Balakrishnan, Geetha; Hatton, Peter D.
Authors
Alison C. Twitchett-Harrison
David Cortés-Ortuño
Max T. Birch
Luke Turnbull l.a.turnbull@durham.ac.uk
PGR Student Doctor of Philosophy
Aleš Štefančič
Feodor Y. Ogrin
Erick O. Burgos-Parra
Nicholas Bukin
Angus Laurenson
Horia Popescu
Marijan Beg
Ondrej Hovorka
Hans Fangohr
Paul A. Midgley
Geetha Balakrishnan
Professor Peter Hatton p.d.hatton@durham.ac.uk
Emeritus Professor
Abstract
The intense research effort investigating magnetic skyrmions and their applications for spintronics has yielded reports of more exotic objects including the biskyrmion, which consists of a bound pair of counter‐rotating vortices of magnetization. Biskyrmions have been identified only from transmission electron microscopy images and have not been observed by other techniques, nor seen in simulations carried out under realistic conditions. Here, quantitative Lorentz transmission electron microscopy, X‐ray holography, and micromagnetic simulations are combined to search for biskyrmions in MnNiGa, a material in which they have been reported. Only type‐I and type‐II magnetic bubbles are found and images purported to show biskyrmions can be explained as type‐II bubbles viewed at an angle to their axes. It is not the magnetization but the magnetic flux density resulting from this object that forms the counter‐rotating vortices.
Citation
Loudon, J. C., Twitchett-Harrison, A. C., Cortés-Ortuño, D., Birch, M. T., Turnbull, L. A., Štefančič, A., …Hatton, P. D. (2019). Do Images of Biskyrmions Show Type-II Bubbles?. Advanced Materials, 31(16), Article 1806598. https://doi.org/10.1002/adma.201806598
Journal Article Type | Article |
---|---|
Online Publication Date | Mar 7, 2019 |
Publication Date | Mar 19, 2019 |
Deposit Date | Mar 19, 2019 |
Publicly Available Date | Apr 17, 2019 |
Journal | Advanced Materials |
Print ISSN | 0935-9648 |
Electronic ISSN | 1521-4095 |
Publisher | Wiley |
Peer Reviewed | Peer Reviewed |
Volume | 31 |
Issue | 16 |
Article Number | 1806598 |
DOI | https://doi.org/10.1002/adma.201806598 |
Public URL | https://durham-repository.worktribe.com/output/1305716 |
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Copyright Statement
Advance online version © 2019 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Published Journal Article
(6 Mb)
PDF
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
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