Interlayer coupling effect in high- T sub c superconductors probed by YBa sub 2 Cu sub 3 O sub 7 minus x /PrBa sub 2 Cu sub 3 O sub 7 minus x superlattices
Journal Article
·
· Physical Review Letters; (USA)
- Department of Physics, Rutgers University, Piscataway, NJ (USA)
- Bellcore, Red Bank, NJ (USA)
The effect of coupling between layers of the high-{ital T}{sub {ital c}} superconductors was studied by varying both the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} and PrBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} layer thicknesses in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}/PrBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} superlattices. Superconductivity was found even when the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} layers had nominal thicknesses as small as 12 A (one unit-cell thickness) but coupling between unit-cell layers is needed to achieve a {ital T}{sub {ital c}} of 90 K. The decrease of {ital T}{sub {ital c}} in isolated YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} layers with increasing sheet resistance is on the same scale of about {h bar}/{ital e}{sup 2} as observed for ordinary superconductors.
- OSTI ID:
- 7023674
- Journal Information:
- Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:25; ISSN PRLTA; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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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
ABSOLUTE ZERO TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
COUPLING
DATA
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
INTERFACES
LOW TEMPERATURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SUPERCONDUCTORS
SUPERLATTICES
THICKNESS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VARIATIONS
VERY LOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSOLUTE ZERO TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
COUPLING
DATA
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
INTERFACES
LOW TEMPERATURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SUPERCONDUCTORS
SUPERLATTICES
THICKNESS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VARIATIONS
VERY LOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES