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Seeding and emergence of composite skyrmions in a van der Waals magnet
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Powalla, Lukas, Birch, Max T., Litzius, Kai, Wintz, Sebastian, Yasin, Fehmi S., Turnbull, Luke A., Schulz, Frank, Mayoh, Daniel, Balakrishnan, Geetha, Weigand, Markus, Yu, Xiuzhen, Kern, Klaus, Schütz, Gisela and Burghard, Marko (2023) Seeding and emergence of composite skyrmions in a van der Waals magnet. Advanced Materials . 2208930. doi:10.1002/adma.202208930 ISSN 0935-9648.
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WRAP-seeding-emergence-composite-skyrmions-van-der-Waals-magnet-2023.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons: Attribution-Noncommercial 4.0. Download (2537Kb) | Preview |
Official URL: https://doi.org/10.1002/adma.202208930
Abstract
Topological charge plays a significant role in a range of physical systems. In particular, observations of real‐space topological objects in magnetic materials have been largely limited to skyrmions – states with a unitary topological charge. Recently, more exotic states with varying topology, such as antiskyrmions, merons, or bimerons and 3D states such as skyrmion strings, chiral bobbers, and hopfions, have been experimentally reported. Along these lines, the realization of states with higher‐order topology has the potential to open new avenues of research in topological magnetism and its spintronic applications. Here, real‐space imaging of such spin textures, including skyrmion, skyrmionium, skyrmion bag, and skyrmion sack states, observed in exfoliated flakes of the van der Waals magnet Fe3−xGeTe2 (FGT) is reported. These composite skyrmions may emerge from seeded, loop‐like states condensed into the stripe domain structure, demonstrating the possibility to realize spin textures with arbitrary integer topological charge within exfoliated flakes of 2D magnets. The general nature of the formation mechanism motivates the search for composite skyrmion states in both well‐known and new magnetic materials, which may yet reveal an even richer spectrum of higher‐order topological objects.
| Item Type: | Journal Article | |||||||||||||||
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| Subjects: | Q Science > QC Physics Q Science > QH Natural history |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||
| SWORD Depositor: | Library Publications Router | |||||||||||||||
| Library of Congress Subject Headings (LCSH): | Skyrme model, Magnetic resonance, X-ray microscopy , Quasimolecules | |||||||||||||||
| Journal or Publication Title: | Advanced Materials | |||||||||||||||
| Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | |||||||||||||||
| ISSN: | 0935-9648 | |||||||||||||||
| Official Date: | 8 February 2023 | |||||||||||||||
| Dates: |
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| Article Number: | 2208930 | |||||||||||||||
| DOI: | 10.1002/adma.202208930 | |||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||
| Publication Status: | Published | |||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
| Date of first compliant deposit: | 8 March 2023 | |||||||||||||||
| Date of first compliant Open Access: | 9 March 2023 | |||||||||||||||
| RIOXX Funder/Project Grant: |
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