Josephson weak links in thin films of YBa sub 2 Cu sub 3 O sub 7 minus x induced by electrical pulses
Journal Article
·
· Applied Physics Letters; (USA)
- Department of Physics, University of California, Berkeley, CA (USA) Center for Advanced Materials, Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720 (USA)
A method is described for fabricating superconducting weak links in thin films of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} grown {ital in} {ital situ} by laser deposition. Carefully controlled electrical pulses applied to patterned bridges at 77 K are shown to reduce the critical current from initial values of typically 10 mA to values as low as 20 {mu}A. The current-voltage characteristics of the Josephson weak links so formed exhibit constant-voltage current steps that oscillate in amplitude as the applied microwave power is increased, implying that the current-phase relation is periodic but not necessarily sinusoidal.
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6818032
- Journal Information:
- Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 56:22; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Scaling behavior of YBa sub 2 Cu sub 3 O sub 7 minus. delta. thin-film weak links
Fabrication of heteroepitaxial YBa sub 2 Cu sub 3 O sub 7 minus x -PrBa sub 2 Cu sub 3 O sub 7 minus x -YBa sub 2 Cu sub 3 O sub 7 minus x Josephson devices grown by laser deposition
Weak links and dc SQUIDS on artificial nonsymmetric grain boundaries in YBa sub 2 Cu sub 3 O sub 7 minus. delta
Journal Article
·
Mon Sep 10 00:00:00 EDT 1990
· Applied Physics Letters; (USA)
·
OSTI ID:6445754
Fabrication of heteroepitaxial YBa sub 2 Cu sub 3 O sub 7 minus x -PrBa sub 2 Cu sub 3 O sub 7 minus x -YBa sub 2 Cu sub 3 O sub 7 minus x Josephson devices grown by laser deposition
Journal Article
·
Sun Nov 05 23:00:00 EST 1989
· Applied Physics Letters; (USA)
·
OSTI ID:5169720
Weak links and dc SQUIDS on artificial nonsymmetric grain boundaries in YBa sub 2 Cu sub 3 O sub 7 minus. delta
Journal Article
·
Sun Dec 01 23:00:00 EST 1991
· Applied Physics Letters; (United States)
·
OSTI ID:6029394
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRIC CONTACTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
FABRICATION
FILMS
JOSEPHSON EFFECT
JUNCTIONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRIC CONTACTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
FABRICATION
FILMS
JOSEPHSON EFFECT
JUNCTIONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES