Pairing by dynamic charge fluctuations in the extended Hubbard model
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Serin Physics Laboratory, Rutgers University, Piscataway, NJ (USA)
- AT T Bell Laboratories, Murray Hill, NJ (USA)
We consider superconductivity mediated by a charge-transfer resonance (CTR) in the weak-coupling approach to the three-band extended Hubbard model for the copper oxide superconductors. Our effective pairing interaction contains the dynamics of the CTR, and local-field effects. Unlike previous work, we solve the linearized Eliashberg equations {ital on} {ital the} {ital lattice} while retaining the full momentum dependence of the interaction and wave functions. We find that the highest {ital T}{sub {ital c}} occurs for an admixture of the extended and uniform {ital s}-wave states and we obtain the frequency dependence of the gap function.
- OSTI ID:
- 6228756
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Vol. 42:7; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HIGH-TC SUPERCONDUCTORS
PAIRING INTERACTIONS
BAND THEORY
COPPER OXIDES
GORKOV-ELIASHBERG THEORY
TRANSITION TEMPERATURE
WAVE FUNCTIONS
CHALCOGENIDES
COPPER COMPOUNDS
FUNCTIONS
INTERACTIONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
656100* - Condensed Matter Physics- Superconductivity
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HIGH-TC SUPERCONDUCTORS
PAIRING INTERACTIONS
BAND THEORY
COPPER OXIDES
GORKOV-ELIASHBERG THEORY
TRANSITION TEMPERATURE
WAVE FUNCTIONS
CHALCOGENIDES
COPPER COMPOUNDS
FUNCTIONS
INTERACTIONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
656100* - Condensed Matter Physics- Superconductivity