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http://doi.org/10.25358/openscience-9727
Autoren: | Dohi, Takaaki Weißenhofer, Markus Kerber, Nico Kammerbauer, Fabian Ge, Yuqing Raab, Klaus Zázvorka, Jakub Syskaki, Maria-Andromachi Shahee, Aga Ruhwedel, Moritz Böttcher, Tobias Pirro, Philipp Jakob, Gerhard Nowak, Ulrich Kläui, Mathias |
Titel: | Enhanced thermally-activated skyrmion diffusion with tunable effective gyrotropic force |
Online-Publikationsdatum: | 30-Nov-2023 |
Erscheinungsdatum: | 2023 |
Sprache des Dokuments: | Englisch |
Zusammenfassung/Abstract: | Magnetic skyrmions, topologically-stabilized spin textures that emerge in magnetic systems, have garnered considerable interest due to a variety of electromagnetic responses that are governed by the topology. The topology that creates a microscopic gyrotropic force also causes detrimental effects, such as the skyrmion Hall effect, which is a well-studied phenomenon highlighting the influence of topology on the deterministic dynamics and drift motion. Furthermore, the gyrotropic force is anticipated to have a substantial impact on stochastic diffusive motion; however, the predicted repercussions have yet to be demonstrated, even qualitatively. Here we demonstrate enhanced thermally-activated diffusive motion of skyrmions in a specifically designed synthetic antiferromagnet. Suppressing the effective gyrotropic force by tuning the angular momentum compensation leads to a more than 10 times enhanced diffusion coefficient compared to that of ferromagnetic skyrmions. Consequently, our findings not only demonstrate the gyro-force dependence of the diffusion coefficient but also enable ultimately energy-efficient unconventional stochastic computing. |
DDC-Sachgruppe: | 530 Physik 530 Physics |
Veröffentlichende Institution: | Johannes Gutenberg-Universität Mainz |
Organisationseinheit: | FB 08 Physik, Mathematik u. Informatik |
Veröffentlichungsort: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-9727 |
Version: | Published version |
Publikationstyp: | Zeitschriftenaufsatz |
Weitere Angaben zur Dokumentart: | Scientific article |
Nutzungsrechte: | CC BY |
Informationen zu den Nutzungsrechten: | https://creativecommons.org/licenses/by/4.0/ |
Zeitschrift: | Nature Communications 14 |
Seitenzahl oder Artikelnummer: | 5424 |
Verlag: | Springer Nature |
Verlagsort: | London |
Erscheinungsdatum: | 2023 |
ISSN: | 2041-1723 |
DOI der Originalveröffentlichung: | 10.1038/s41467-023-40720-0 |
Enthalten in den Sammlungen: | DFG-491381577-G |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | ||
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enhanced_thermallyactivated_s-20231130153652240.pdf | 1.39 MB | Adobe PDF | Öffnen/Anzeigen |