Tunneling measurements on superconductor/insulator/superconductor junctions using single-crystal YBa sub 2 Cu sub 3 O sub 7 minus x thin films
Journal Article
·
· Applied Physics Letters; (USA)
- Research Institute for Production Development, Kyoto 606, Japan (JP)
- Institute for Chemical Research, Kyoto University, Uji 611, (Japan)
- Department of Mathematics and Physics, The National Defense Academy, Yokosuka 239, (Japan)
We have, for the first time, made quasi-particle tunneling measurements on a YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}(001)/Y{sub 2}O{sub 3}(001)/YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}(001)junction, which was epitaxially grown on a MgO(100) substrate in an {ital in}-{ital situ} process. Both layers of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} showed the same superconducting transition of {ital T}{sub {ital c} end} =86 K with {Delta}{ital T}({ital R}=10--90%)=1.5 K. Quasi-particle tunneling in the direction perpendicular to the Cu-O planes was measured. A gap parameter {Delta}(4.5 K) of 9.0{plus minus}0.2 meV and a value of 2{Delta}/{ital kT}{sub {ital c}} of 3.5{sup +0.4}{sub {minus}0.6} were obtained.
- OSTI ID:
- 7169446
- Journal Information:
- Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 56:7; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Journal Article
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Tue Oct 31 23:00:00 EST 1995
· Journal of Materials Research
·
OSTI ID:124786
Quasiparticle density of states in the perpendicular direction to the Cu-O planes in YBa sub 2 Cu sub 3 O sub 7 minus x single-crystal thin films
Journal Article
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Fri Sep 01 00:00:00 EDT 1989
· Physical Review (Section) B: Condensed Matter; (USA)
·
OSTI ID:5650487
CeO{sub 2} compatibility with YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} in superconducting-film multilayers
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Fri Oct 31 23:00:00 EST 1997
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·
OSTI ID:544929
Related Subjects
36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
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
DATA
ENERGY GAP
EPITAXY
EXPERIMENTAL DATA
FABRICATION
FILMS
INFORMATION
JUNCTIONS
LAYERS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
THERMODYNAMIC PROPERTIES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TUNNEL EFFECT
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
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
DATA
ENERGY GAP
EPITAXY
EXPERIMENTAL DATA
FABRICATION
FILMS
INFORMATION
JUNCTIONS
LAYERS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
THERMODYNAMIC PROPERTIES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TUNNEL EFFECT
YTTRIUM COMPOUNDS
YTTRIUM OXIDES