Spectral-weight transfer in effective single-band models for the high-[ital T][sub [ital c]] cuprates

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.16857· OSTI ID:5722667

Feiner, L F ^[1]

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1. Philips Research Laboratories, Prof. Holstlaan 4, 5656 AA Eindhoven (Netherlands)

The low-energy physics of the Emery model, representing the high-[ital T][sub [ital c]] cuprates, can be understood by separating intracell interference within CuO[sub 4] cells from intercell correlations described by an effective single-band Hubbard model. This decomposition explains the anomalous transfer of spectral intensity from the high- to the low-energy scale, the asymmetry between electron and hole doping, and the breakdown of low-energy sum rules. These features are related to the existence of an antibound charge transfer exciton band, are are very sensitive to the strength of the Coulomb repulsion [ital U][sub [ital d]].

• OSTI ID: 5722667
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 48:22; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ASYMMETRY
CHARGE EXCHANGE
CHARGE TRANSPORT
CRYSTAL DOPING
EQUATIONS
EXCITONS
FUNCTIONS
HIGH-TC SUPERCONDUCTORS
QUASI PARTICLES
SPECTRAL DENSITY
SPECTRAL FUNCTIONS
SUM RULES
SUPERCONDUCTORS