Tunneling spectroscopy of a La-Sr-Cu-O break junction: Evidence for strong-coupling superconductivity
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
Detailed structure in the quasiparticle tunneling has been observed in La-Sr-Cu-O superconductive tunneling junctions using the break-junction technique. Variability in the energy gap and associated structure in the current-voltage curves is observed indicating significant inhomogeneity in the superconducting properties. Large energy gaps (7.0 meV) and deep structure in the conductance derivatives are evidence for a strong-coupling mechanism.
- Research Organization:
- National Bureau of Standards, Electromagnetic Technology Division, Boulder, Colorado 80303
- OSTI ID:
- 6511793
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Vol. 35:16
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER OXIDES
SUPERCONDUCTIVITY
LANTHANUM OXIDES
STRONTIUM OXIDES
ENERGY GAP
POWDERS
QUASI PARTICLES
SUPERCONDUCTING JUNCTIONS
TUNNEL EFFECT
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
JUNCTIONS
LANTHANUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER OXIDES
SUPERCONDUCTIVITY
LANTHANUM OXIDES
STRONTIUM OXIDES
ENERGY GAP
POWDERS
QUASI PARTICLES
SUPERCONDUCTING JUNCTIONS
TUNNEL EFFECT
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
JUNCTIONS
LANTHANUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity