Electron tunneling and the energy gap in Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub x/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
Results of electron tunneling on single crystals of the Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub x/ superconductor are reported. The junctions show a gap structure with ..delta..approx. =25 meV, whose temperature dependence exhibits a qualitatively Bardeen-Cooper-Schrieffer-like behavior with a gap-closing T/sub c/approx. =81--85 K. Comparisons of these tunneling spectra to those obtained on YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/ are made. Evidence that 2..delta../kT/sub c/approx.7 for both Ba/sub 2/Sr/sub 2/CaCu/sub 2/O/sub x/ and YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/ is also discussed.
- Research Organization:
- Department of Applied Physics, Stanford University, Stanford, California 94305
- OSTI ID:
- 6757287
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:1; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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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
BCS THEORY
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY GAP
FERMIONS
JUNCTIONS
LEPTONS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
ULTRALOW TEMPERATURE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BCS THEORY
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY GAP
FERMIONS
JUNCTIONS
LEPTONS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
ULTRALOW TEMPERATURE