Ordered Bose Glass of Vortices in Superconducting YBa2Cu3O7−δ Thin Films with a Periodic Pin Lattice Created by Focused Helium Ion Irradiation

The defect-rich morphology of YBa2Cu3O7−δ (YBCO) thin films leads to a glass-like arrangement of Abrikosov vortices which causes the resistance to disappear in vanishing current densities. This vortex glass consists of entangled vortex lines and is identified by a characteristic scaling of the volta...

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Published inNanomaterials (Basel, Switzerland) Vol. 12; no. 19; p. 3491
Main Authors Backmeister, Lucas, Aichner, Bernd, Karrer, Max, Wurster, Katja, Kleiner, Reinhold, Goldobin, Edward, Koelle, Dieter, Lang, Wolfgang
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 06.10.2022
MDPI
Subjects
copper-oxide superconductors
Defects
Helium
Helium ions
helium-ion microscope
Ion beams
Ion irradiation
Irradiation
Magnetic fields
ordered Bose glass
Phase transitions
Radiation
Single crystals
Temperature
Thin films
voltage–current isotherms
vortex glass
vortex matching
Vortices
YBCO superconductors
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Summary:The defect-rich morphology of YBa2Cu3O7−δ (YBCO) thin films leads to a glass-like arrangement of Abrikosov vortices which causes the resistance to disappear in vanishing current densities. This vortex glass consists of entangled vortex lines and is identified by a characteristic scaling of the voltage–current isotherms. Randomly distributed columnar defects stratify the vortex lines and lead to a Bose glass. Here, we report on the observation of an ordered Bose glass in a YBCO thin film with a hexagonal array of columnar defects with 30 nm spacings. The periodic pinning landscape was engineered by a focused beam of 30 keV He+ ions in a helium-ion microscope.
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ISSN:2079-4991
2079-4991
DOI:10.3390/nano12193491