Quasi-two-dimensional phase fluctuations in bulk superconducting YBa/sub 2/Cu/sub 3/O/sub 7/ single crystals
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
A detailed study of the electrical transport properties in high-quality bulk single crystals YBa/sub 2/Cu/sub 3/O/sub 7/ has manifested a Kosterlitz-Thouless (K-T)--type transition in the ab plane 0.2 K below the mean-field superconducting transition (T/sub c//sup 0/ = 93.15 K). The c-axis correlation length l/sub c/(T = 0)approx. =6 A and a large two-dimensional effective mass (m/sub a//sub b//sup *//m/sub e//similar to/10) of the supercarrier are estimated based on the K-T theory. The large effective mass suggests strong electron-electron correlations for the supercarriers confined in a quasi-two-dimensional sheet.
- Research Organization:
- IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, New York 10598
- OSTI ID:
- 6114434
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Vol. 39:13
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:6114434
Effect of the Temperature, External Magnetic Field, and Transport Current on Electrical Properties, Vortex Structure Evolution Processes, and Phase Transitions in Subsystems of Superconducting Grains and “Weak Links” of Granular Two-Level High-Temperature Superconductor YBa{sub 2}Cu{sub 3}O{sub 7–δ}
Journal Article
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Thu Mar 15 00:00:00 EDT 2018
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OSTI ID:6114434
Related Subjects
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
PHASE STUDIES
COPPER OXIDES
YTTRIUM OXIDES
EFFECTIVE MASS
ELECTRIC CONDUCTIVITY
ELECTRON CORRELATION
MEAN-FIELD THEORY
MONOCRYSTALS
TRANSITION TEMPERATURE
TWO-DIMENSIONAL CALCULATIONS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CORRELATIONS
CRYSTALS
ELECTRICAL PROPERTIES
MASS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
PHASE STUDIES
COPPER OXIDES
YTTRIUM OXIDES
EFFECTIVE MASS
ELECTRIC CONDUCTIVITY
ELECTRON CORRELATION
MEAN-FIELD THEORY
MONOCRYSTALS
TRANSITION TEMPERATURE
TWO-DIMENSIONAL CALCULATIONS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CORRELATIONS
CRYSTALS
ELECTRICAL PROPERTIES
MASS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity