Vortex matching at 6 T in YBa2Cu3 O7-δ thin films by imprinting a 20-nm periodic pinning array with a focused helium-ion beam

verfasst von: Max Karrer, Bernd Aichner, Katja Wurster, César Magén, Christoph Schmid, Robin Hutt, Barbora Budinská, Oleksandr V. Dobrovolskiy, Reinhold Kleiner, Wolfgang Lang, Edward Goldobin, Dieter Koelle
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 YBa2Cu3O7-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.
Externe Organisation(en): Eberhard Karls Universität Tübingen
Universität Wien
Universidad de Zaragoza
Technische Universität Braunschweig
Typ: Artikel
Journal: Physical review applied
Band: 22
ISSN: 2331-7019
Publikationsdatum: 17.07.2024
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeine Physik und Astronomie
Elektronische Version(en): https://doi.org/10.1103/PhysRevApplied.22.014043 (Zugang: Offen)

BibTeX

@article{e26bdaad0cac4922975cc9fb0a5086c5,
title = "Vortex matching at 6 T in YBa2Cu3 O7-δ thin films by imprinting a 20-nm periodic pinning array with a focused helium-ion beam",
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 YBa2Cu3O7-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.",
author = "Max Karrer and Bernd Aichner and Katja Wurster and C{\'e}sar Mag{\'e}n and Christoph Schmid and Robin Hutt and Barbora Budinsk{\'a} and Dobrovolskiy, {Oleksandr V.} and Reinhold Kleiner and Wolfgang Lang and Edward Goldobin and Dieter Koelle",
note = "Publisher Copyright: {\textcopyright} 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",
year = "2024",
month = jul,
day = "17",
doi = "10.1103/PhysRevApplied.22.014043",
language = "English",
volume = "22",
journal = "Physical review applied",
issn = "2331-7019",
publisher = "American Physical Society",
number = "1",
}