Superconducting transition in two bidimensional [ital t]-[ital J] lattices with interplane single-electron hopping

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.51.6107· OSTI ID:6449907

Biagini, M ^[1]

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1. Dipartimento di Fisica, Universita di Modena, via Campi 213/A, I-41100 Modena (Italy)

I analyze the effect of an interplane single-electron hopping between two bidimensional [ital t]-[ital J] lattices on the superconducting transition temperature. Mean-field theories of the [ital t]-[ital J] model predict [ital d]-wave superconductivity at a very high temperature ([ital T][sub [ital c]][sup 0][approx]0.15[ital J]). I show that a single-electron hopping can reduce strongly the critical temperature [ital T][sub [ital c]][sup 0]. For sufficiently large values of the hopping parameter, superconductivity is suppressed for doping lower than a critical finite doping [delta][sub [ital c]], and the critical temperature [ital T][sub [ital c]][sup 0] assumes practically a constant value at intermediate doping 0.08[le][delta][le]0.24. These results are in good qualitative agreement with the well-known phase diagram of the high-[ital T][sub [ital c]] copper oxides.

• OSTI ID: 6449907
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 51:9; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER COMPOUNDS
COUPLING
CRYSTAL DOPING
CUPRATES
D WAVES
DIMENSIONS
HIGH-TC SUPERCONDUCTORS
MATHEMATICAL MODELS
MEAN-FIELD THEORY
OXYGEN COMPOUNDS
PARTIAL WAVES
PHYSICAL PROPERTIES
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE