Zeissler, K, Finizio, S, Shahbazi, K et al. (10 more authors) (2018) Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs. Nature Nanotechnology, 13. pp. 1161-1166. ISSN 1748-3387
Abstract
Magnetic skyrmions are knot-like quasiparticles. They are candidates for non-volatile data storage in which information is moved between fixed read and write terminals. The read-out operation of skyrmion-based spintronic devices will rely on the electrical detection of a single magnetic skyrmion within a nanostructure. Here we present Pt/Co/Ir nanodiscs that support skyrmions at room temperature. We measured the Hall resistivity and simultaneously imaged the spin texture using magnetic scanning transmission X-ray microscopy. The Hall resistivity is correlated to both the presence and size of the skyrmion. The size-dependent part matches the expected anomalous Hall signal when averaging the magnetization over the entire disc. We observed a resistivity contribution that only depends on the number and sign of skyrmion-like objects present in the disc. Each skyrmion gives rise to 22 ± 2 nΩ cm irrespective of its size. This contribution needs to be considered in all-electrical detection schemes applied to skyrmion-based devices. Not only the area of Néel skyrmions but also their number and sign contribute to their Hall resistivity.
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Copyright, Publisher and Additional Information: | © 2018, Springer Nature. This is an author produced version of a paper published in Nature Nanotechnology. Uploaded in accordance with the publisher's self-archiving policy. | ||||
Keywords: | Magnetic properties and materials; Spintronics | ||||
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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) |
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Depositing User: | Symplectic Publications | ||||
Date Deposited: | 19 Nov 2018 12:29 | ||||
Last Modified: | 01 Apr 2019 00:42 | ||||
Status: | Published | ||||
Publisher: | Nature | ||||
Identification Number: | https://doi.org/10.1038/s41565-018-0268-y | ||||
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