Effects of correlation and disorder on the phase diagram of YBa sub 2 Cu sub 3 O sub 6+ x
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Instituto de Fisica, Universidad Federal Fluminense, Niteroi, Rio de Janeiro (Brazil)
- Instituto de Fisica, Universidad Autonoma de San Luis Potosi, San Luis Potosi (Mexico)
A model to study the electronic properties of high-{ital T}{sub {ital c}} superconductors is presented. It is based on a Hamiltonian that includes the interatomic and intra-atomic electronic repulsion at the various Cu and O sites of YBa{sub 2}Cu{sub 3}O{sub 6+{ital x}}. We analyze in detail the effects of the oxygen concentration and the disorder in the basal plane. Most of the observed properties are well reproduced. Among them is the metal-non metal transition as a function of oxygen concentration and of the total charge transferred by the cationic elements. Under the assumption that the transition temperature is proportional to the number of holes in the CuO{sub 2} planes, we reproduce the concentration dependence of {Tc}.
- OSTI ID:
- 6483109
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:4; 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
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DIAGRAMS
HAMILTONIANS
HIGH-TC SUPERCONDUCTORS
HOLES
MATHEMATICAL OPERATORS
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHYSICAL PROPERTIES
QUANTITY RATIO
QUANTUM OPERATORS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DIAGRAMS
HAMILTONIANS
HIGH-TC SUPERCONDUCTORS
HOLES
MATHEMATICAL OPERATORS
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHYSICAL PROPERTIES
QUANTITY RATIO
QUANTUM OPERATORS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES