Superconductivity in La-deficient and stoichiometric La/sub 2/CuO/sub 4/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
The effects of La deficiency and of impurities on the occurrence of filamentary superconductivity in La/sub 2/CuO/sub 4/ have been investigated by magnetic-susceptibility and electrical-resistivity measurements. Reducing the purity of the starting material degrades the superconductivity. La deficiency causes a fully reentrant superconducting-to-normal-state transition with decreasing temperature at temperatures below T/sub c/. This behavior clarifies the incipient reentrance which is observed in nominally stoichiometric La/sub 2/CuO/sub 4/. We associate the reentrant transition with the recently observed structural transformation from the orthorhombic to a semiconducting monoclinic phase.
- Research Organization:
- Rutgers University, Department of Physics and Astronomy, Piscataway, New Jersey 08855-0849
- OSTI ID:
- 5681278
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Vol. 36:13
- Country of Publication:
- United States
- Language:
- English
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Fri Jul 01 00:00:00 EDT 1988
· Phys. Rev. B: Condens. Matter; (United States)
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OSTI ID:5681278
Evolution and the concomitant disappearance of high- Tc superconductivity with carrier concentration in the La sub 2 minus x Sr sub x CuO sub 4 minus. delta. system (0. 0 le x le 1. 2): Crossover from a Mott insulator to a band metal
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Mon Jan 01 00:00:00 EST 1990
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OSTI ID:5681278
Related Subjects
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
SUPERCONDUCTIVITY
LANTHANUM OXIDES
IMPURITIES
MAGNETIC SUSCEPTIBILITY
PELLETS
STOICHIOMETRY
TRANSITION TEMPERATURE
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LANTHANUM COMPOUNDS
MAGNETIC PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
SUPERCONDUCTIVITY
LANTHANUM OXIDES
IMPURITIES
MAGNETIC SUSCEPTIBILITY
PELLETS
STOICHIOMETRY
TRANSITION TEMPERATURE
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LANTHANUM COMPOUNDS
MAGNETIC PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity