Titel
Vortex matching at 6 T in YBa2Cu3O7−δ thin films by imprinting a 20-nm periodic pinning array with a focused helium-ion beam
Autor*in
Max Karrer
University of Tübingen
Autor*in
Katja Wurster
University of Tübingen
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Abstract
Controlled engineering of vortex pinning sites in copper-oxide superconductors is a critical issue in manufacturing devices based on magnetic flux quanta. To address this, we employed a focused He-ion beam (He-FIB) to irradiate thin YBa2⁢Cu3⁢O7−𝛿 films and create ultradense hexagonal arrays of defects with lattice spacings as small as 20 nm. Critical current and magnetoresistance measurements demonstrate efficient pinning by a matching field of 6 T visible in a huge temperature range from the critical temperature 𝑇𝑐 down to 2 K. These results show that He-FIB irradiation provides excellent opportunities for the development and application of superconducting fluxonic devices based on Abrikosov vortices. In particular, our findings suggest that such devices can operate at temperatures far below 𝑇𝑐, where superconductivity is robust.
Stichwort
Condensed Matter, Materials & Applied Physics
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:2081978
Erschienen in
Titel
Physical Review Applied
Band
22
Ausgabe
1
ISSN
2331-7019
Erscheinungsdatum
2024
Seitenanfang
014043-1
Seitenende
014043-11
Verlag
American Physical Society (APS)
Projektnummer
I4865-N – Austrian Science Fund (FWF)
Projektnummer
I6079-N – Austrian Science Fund (FWF)
Projektnummer
823717 – European Union (all programmes)
... show all
Erscheinungsdatum
2024
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