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Do images of biskyrmions show type‐II bubbles?
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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 and Hatton, Peter D. (2019) Do images of biskyrmions show type‐II bubbles? Advanced Materials, 31 (16). 1806598. doi:10.1002/adma.201806598
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WRAP-images-biskyrmions-show-type-II-bubbles-Balakrishnan-2019.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (5Mb) | Preview |
Official URL: http://dx.doi.org/10.1002/adma.201806598
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.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | Q Science > QC Physics | ||||||||||
| Divisions: | Faculty of Science > Physics | ||||||||||
| Library of Congress Subject Headings (LCSH): | Skyrme model, Magnetic bubbles, X-ray holography | ||||||||||
| Journal or Publication Title: | Advanced Materials | ||||||||||
| Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | ||||||||||
| ISSN: | 0935-9648 | ||||||||||
| Official Date: | 7 March 2019 | ||||||||||
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| Volume: | 31 | ||||||||||
| Number: | 16 | ||||||||||
| Article Number: | 1806598 | ||||||||||
| DOI: | 10.1002/adma.201806598 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Open Access | ||||||||||
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