Autoren:	Song, Chengkun Kerber, Nico Rothörl, Jan Ge, Yuqing Raab, Klaus Seng, Boris Brems, Maarten A. Dittrich, Florian Reeve, Robert M. Wang, Jianbo Liu, Qingfang Virnau, Peter Kläui, Mathias
Titel:	Commensurability between element symmetry and the number of skyrmions governing skyrmion diffusion in confined geometries
Online-Publikationsdatum:	2-Jun-2021
Erscheinungsdatum:	2021
Sprache des Dokuments:	Englisch
Zusammenfassung/Abstract:	Magnetic skyrmions are topological magnetic structures, which exhibit quasi-particle properties and can show enhanced stability against perturbation from thermal noise. Recently, thermal Brownian diffusion of these quasi-particles has been found in continuous films, and unconventional computing applications have received significant attention, requiring structured elements. Thus, as the next necessary step, skyrmion diffusion in confined geometries is studied, and it is found to be qualitatively different: The diffusion is governed by the interplay between the total number of skyrmions and the structure geometry. In particular, the effect of circular and triangular geometrical confinement is ascertained. It is found that for triangular geometries, the behavior is drastically different for the cases when the number of skyrmions in the element is either commensurate or incommensurate with a symmetric filling of the element. This influence of commensurability is corroborated by simulations of a quasi-particle model.
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-5943
Version:	Published version
Publikationstyp:	Zeitschriftenaufsatz
Weitere Angaben zur Dokumentart:	Scientific article
Nutzungsrechte:	CC BY-NC-ND
Informationen zu den Nutzungsrechten:	https://creativecommons.org/licenses/by-nc-nd/4.0/
Zeitschrift:	Advanced functional materials 31 19
Seitenzahl oder Artikelnummer:	2010739
Verlag:	Wiley-VCH
Verlagsort:	Weinheim
Erscheinungsdatum:	2021
ISSN:	1616-301X
URL der Originalveröffentlichung:	https://doi.org/10.1002/adfm.202010739
DOI der Originalveröffentlichung:	10.1002/adfm.202010739
Enthalten in den Sammlungen:	JGU-Publikationen