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3D quasi-skyrmions in thick cylindrical and dome-shape soft nanodots

Berganza, Eider 1; Fernandez-Roldan, Jose Angel ; Jaafar, Miriam; Asenjo, Agustina; Guslienko, Konstantin; Chubykalo-Fesenko, Oksana
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)

Abstract:

Magnetic skyrmions are widely attracting researchers due to fascinating physics and novel applications related to their non-trivial topology. Néel skyrmions have been extensively investigated in magnetic systems with Dzyaloshinskii–Moriya interaction (DMI) and/or perpendicular magnetic anisotropy. Here, by means of micromagnetic simulations and analytical calculations, we show that 3D quasi-skyrmions of Néel type, with topological charge close to 1, can exist as metastable states in soft magnetic nanostructures with no DMI, such as in Permalloy thick cylindrical and dome-shaped nanodots. The key factor responsible for the stabilization of DMI-free is the interplay of the exchange and magnetostatic energies in the nanodots. The range of geometrical parameters where the skyrmions are found is wider in magnetic dome-shape nanodots than in their cylindrical counterparts. Our results open the door for a new research line related to the nucleation and stabilization of magnetic skyrmions in a broad class of nanostructured soft magnetic materials.


Verlagsausgabe §
DOI: 10.5445/IR/1000145074
Veröffentlicht am 20.04.2022
Originalveröffentlichung
DOI: 10.1038/s41598-022-07407-w
Scopus
Zitationen: 6
Web of Science
Zitationen: 5
Dimensions
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2022
Sprache Englisch
Identifikator ISSN: 2045-2322
KITopen-ID: 1000145074
HGF-Programm 43.31.02 (POF IV, LK 01) Devices and Applications
Erschienen in Scientific Reports
Verlag Nature Research
Band 12
Heft 1
Seiten Art. Nr.: 3426
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 02.03.2022
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