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 00:00:00 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), Vol. 59:20; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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