Electron tunneling study of the normal and superconducting states of Bi sub 1. 7 Pb sub 0. 3 Sr sub 2 CaCu sub 2 O sub x
Journal Article
·
· Physical Review (Section) B: Condensed Matter; (USA)
- Materials Science Division and Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
We report point-contact tunneling into single crystals of Bi{sub 1.7}Pb{sub 0.3}Sr{sub 2}CaCu{sub 2}O{sub {ital x}}. The current-voltage characteristics {ital I}({ital V}) are quite symmetrical and very reproducible, exhibit a decreasing conductance at high voltages, and can be fitted with a smeared BCS density of states (DOS). We are necessarily led to conclude that the normal-state conductance, in the absence of parabolic-tunneling-barrier effects, has a peak near the Fermi energy, and we {ital speculate} that it could be due to the normal-state DOS of Bi{sub 1.7}Pb{sub 0.3}Sr{sub 2}CaCu{sub 2}O{sub {ital x}}.
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5212556
- Journal Information:
- Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:13; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Mon Dec 30 23:00:00 EST 1996
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OSTI ID:548487
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
ELECTRIC CONTACTS
ELECTRICAL EQUIPMENT
ELECTRONS
ELEMENTARY PARTICLES
ENERGY-LEVEL DENSITY
EQUIPMENT
FERMIONS
LEAD COMPOUNDS
LEAD OXIDES
LEPTONS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
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
ELECTRIC CONTACTS
ELECTRICAL EQUIPMENT
ELECTRONS
ELEMENTARY PARTICLES
ENERGY-LEVEL DENSITY
EQUIPMENT
FERMIONS
LEAD COMPOUNDS
LEAD OXIDES
LEPTONS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT