Research Data Leeds Repository
Dataset associated with 'Pinning and hysteresis in the field dependent diameter evolution of skyrmions in Pt/Co/Ir superlattice stacks'
Citation
Zeissler, Katharina and Mruczkiewicz, Michal and Finizio, Simone and Raabe, Jörg and Shepley, Philippa M. and Sadovnikov, Alexandr and Nikitov, Sergey and Fallon, Kayla and McFadzean, Sam and McVitie, Stephen and Moore, Thomas A. and Burnell, Gavin and Marrows, Christopher H. (2017) Dataset associated with 'Pinning and hysteresis in the field dependent diameter evolution of skyrmions in Pt/Co/Ir superlattice stacks'. University of Leeds. [Dataset] https://doi.org/10.5518/261
Dataset description
We have imaged Néel skyrmion bubbles in perpendicularly magnetised polycrystalline multilayers patterned into 1 μm diameter dots, using scanning transmission x-ray microscopy. The skyrmion bubbles can be nucleated by the application of an external magnetic field and are stable at zero field with a diameter of 260 nm. Applying an out of plane field that opposes the magnetisation of the skyrmion bubble core moment applies pressure to the bubble and gradually compresses it to a diameter of approximately 100 nm. On removing the field the skyrmion bubble returns to its original diameter via a hysteretic pathway where most of the expansion occurs in a single abrupt step. This contradicts analytical models of homogeneous materials in which the skyrmion compression and expansion are reversible. Micromagnetic simulations incorporating disorder can explain this behaviour using an effective thickness modulation between 10 nm grain
Keywords: | Physics, Applied Physics, Solid State Physics | ||||||
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Subjects: | F000 - Physical sciences > F300 - Physics F000 - Physical sciences > F300 - Physics > F310 - Applied physics F000 - Physical sciences > F300 - Physics > F320 - Chemical physics > F321 - Solid-state physics |
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Divisions: | Faculty of Engineering and Physical Sciences > School of Physics and Astronomy | ||||||
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License: | Creative Commons Attribution 4.0 International (CC BY 4.0) | ||||||
Date deposited: | 14 Feb 2018 12:35 | ||||||
URI: | https://archive.researchdata.leeds.ac.uk/id/eprint/312 | ||||||