High-temperature dc superconducting quantum interference device with deep-submicron YBa sub 2 Cu sub 3 O sub 7 weak links

Journal Article · Mon Nov 11 04:00:00 EST 1991 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.105916· OSTI ID:5150197

Romaine, S E; Mankiewich, P M; Skocpol, W J ^[1]; Westerwick, E ^[2]

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1. Department of Physics, Boston University, Boston, Massachusetts (USA)
2. AT T Bell Laboratories, Holmdel, New Jersey (USA)

We have fabricated a YBa{sub 2}Cu{sub 3}O{sub 7} (YBCO) thin-film dc superconducting quantum interference device (SQUID) with lithographically defined deep-submicron weak links. At 77 K the voltage response to dc flux is sinusoidal and nonhysteretic, with maximum peak-to-peak amplitude of 5 {mu}V. The maximum response is 8 {mu}V at 70 K, where 2{ital LI}{sub 0}/{Phi}{sub 0}{approx}1. At lower temperatures, the maximum response oscillates in the range 4--6 {mu}V. Random telegraph noise was observed near 30--40 K. Well-behaved Shapiro steps were observable at all measured temperatures below {ital T}{sub {ital c}}.

• OSTI ID: 5150197
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 59:20; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
CUPRATES
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRICATION
FLUXMETERS
HIGH-TC SUPERCONDUCTORS
LOW TEMPERATURE
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
QUATERNARY COMPOUNDS
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES