Madelung energy and charge transfer in Pb sub 2 Sr sub 2 Y sub 1 minus x Ca sub x Cu sub 3 O sub 8+. delta. : Possible extra superconducting regions
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Department of Applied Physics, Nagoya University, Nagoya 464-01, Japan (JP)
Electronic configurations in the Pb{sub 2}Sr{sub 2}Y{sub 1{minus}{ital x}}Ca{sub {ital x}}Cu{sub 3}O{sub 8+{delta}} superconducting layered compounds are examined through the calculation of the Madelung energy in the ionic model. It is shown that the carrier distributions in the compounds exhibit strong contrast with those in the well-understood Ba{sub 2}YCu{sub 3}O{sub 6+{delta}} compounds despite their structural similarity. We demonstrate how the charge transfer between structural building blocks, i.e., the copper-oxygen planes and the charge reservoir, controls the region ({ital x},{delta}) where the superconductivity emerges. The existence of new superconducting regions separable from the known one is predicted.
- OSTI ID:
- 6904661
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:10; ISSN PRBMD; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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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
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHARGE CARRIERS
CHARGE EXCHANGE
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL MODELS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HOLES
LEAD COMPOUNDS
LEAD OXIDES
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STOICHIOMETRY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHARGE CARRIERS
CHARGE EXCHANGE
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL MODELS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HOLES
LEAD COMPOUNDS
LEAD OXIDES
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STOICHIOMETRY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES