Tunneling measurements of the energy gap in Bi/sub 4/Ca/sub 3/Sr/sub 3/Cu/sub 4/O/sub 16+//sub delta/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
We have measured at 4.2 and 53 K the tunneling current-voltage (I-V) characteristics of the new high-T/sub c/ superconductor Bi/sub 4/Ca/sub 3/Sr/sub 3/Cu/sub 4/O/sub 16+//sub delta/ with delta = 0.32, using a low-temperature scanning-tunneling microscope. We obtain gap values ..delta.. ranging between 15 and 23 meV. This corresponds to 2..delta../K/sub B/T/sub c/ values between 4.5 and 6.5. These results are consistent with strong-coupling superconductivity. A study of the spatial dependence of ..delta.. has been done at 4.2 K.
- Research Organization:
- Departamento de Fisica de la Materia Condensada, C-III, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
- OSTI ID:
- 6749250
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:13; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Sun May 01 00:00:00 EDT 1988
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:5220959
Tunneling measurements of the energy gap in the high- T sub c superconductor Tl sub 2 Ba sub 2 Ca sub 2 Cu sub 3 O sub 10+. delta
Journal Article
·
Thu Nov 30 23:00:00 EST 1989
· Physical Review (Section) B: Condensed Matter; (USA)
·
OSTI ID:5067586
Tunneling measurements on the high-T/sub c/ superconductors La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4-//sub delta/ and YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/
Journal Article
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OSTI ID:6511504
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
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
ENERGY GAP
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCANNING ELECTRON MICROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
ENERGY GAP
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCANNING ELECTRON MICROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE