Practical high T sub c Josephson junctions and dc SQUIDs operating above 85 K
Journal Article
·
· Applied Physics Letters; (USA)
- Biomagnetic Technologies, Inc., 9727 Pacific Heights Boulevard, San Diego, California 92121 (US)
Reproducible high {ital T}{sub {ital c}} YBa{sub 2}Cu{sub 3}O{sub 7}/Ag/YBa{sub 2}Cu{sub 3}O{sub 7} Josephson junctions have been fabricated using an entirely {ital in} {ital situ} step-edge technique. The junction process requires the deposition of a single high {ital T}{sub {ital c}} film and the patterning is performed using standard photolithography and ion-beam etching. The junctions exhibit a well-defined supercurrent from 4.2 to 87 K and the ac Josephson effect is observed up to 80 K in response to microwave radiation. dc SQUIDs have been fabricated and show the expected periodic modulation of the critical current in a magnetic field at temperatures ranging from 4.2 to 85.7 K. All of the 56 devices fabricated and measured to date show a well-defined supercurrent from 4.2 to over 77 K.
- OSTI ID:
- 5806041
- Journal Information:
- Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 58:22; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Preparation and properties of all high T sub c SNS-type edge dc SQUIDs
Josephson junction and dc SQUID made from superconducting Y-Ba-Cu-O thick film
Low noise YBa sub 2 Cu sub 3 O sub 7 minus. delta. grain boundary junction dc SQUIDs
Conference
·
Thu Feb 28 23:00:00 EST 1991
· IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)
·
OSTI ID:6093131
Josephson junction and dc SQUID made from superconducting Y-Ba-Cu-O thick film
Conference
·
Tue Feb 28 23:00:00 EST 1989
· IEEE Trans. Magn.; (United States)
·
OSTI ID:6043781
Low noise YBa sub 2 Cu sub 3 O sub 7 minus. delta. grain boundary junction dc SQUIDs
Journal Article
·
Mon Aug 13 00:00:00 EDT 1990
· Applied Physics Letters; (USA)
·
OSTI ID:6516193
Related Subjects
426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
ELECTRIC CURRENTS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
ETCHING
FABRICATION
FILMS
FLUXMETERS
HIGH-TC SUPERCONDUCTORS
JOSEPHSON JUNCTIONS
JUNCTIONS
MEASURING INSTRUMENTS
METALS
MICROWAVE EQUIPMENT
MICROWAVE RADIATION
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SILVER
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
SURFACE FINISHING
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
ELECTRIC CURRENTS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
ETCHING
FABRICATION
FILMS
FLUXMETERS
HIGH-TC SUPERCONDUCTORS
JOSEPHSON JUNCTIONS
JUNCTIONS
MEASURING INSTRUMENTS
METALS
MICROWAVE EQUIPMENT
MICROWAVE RADIATION
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SILVER
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
SURFACE FINISHING
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES