High-T{sub c} super conducting quantum interference devices with slots or holes: Low 1/f noise in ambient magnetic fields

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.118776· OSTI ID:534437

Dantsker, E; Tanaka, S; Clarke, J ^[1]

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1. Department of Physics, University of California, Berkeley, California 94720 (United States)

High-transition temperature dc superconducting quantum interference devices (SQUIDs) have been fabricated with arrays of slots or holes patterned in the 186{times}204 {mu}m{sup 2} washers. In two designs, with seven slots or 248 holes, the linewidth of the remaining YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} film was 4 {mu}m. These devices exhibited virtually no increase in their low-frequency noise when they were cooled in static magnetic fields up to a certain threshold, above 100 {mu}T in the best case. Furthermore, the mutual inductance between these devices and a seven-turn, spiral coil was at least 85{percent} of that for a solid SQUID with the same outer dimensions. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 534437
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 15 Vol. 70; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BARIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
NOISE
SQUID DEVICES
SUPERCONDUCTING FILMS
YTTRIUM OXIDES