Repulsion-induced superconductivity in a multiband Hubbard model

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.807· OSTI ID:6988889

Bastide, C ^[1]

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1. Laboratoire Louis Neel, Centre National de la Recherche Scientifique, 166X, 38042 Grenoble CEDEX, France (FR)

A multiband Hubbard Hamiltonian (close to the one used to describe CuO{sub 2} planes) is studied with strong-coupling perturbation theory. Two charge-fluctuation mechanisms are described and lead to a spin-independent attraction, which is much larger than the antiferromagnetic interaction. It provides a convincing argument for the possibility of superconductivity induced by repulsive interactions.

• OSTI ID: 6988889
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:1; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BAND THEORY
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
HAMILTONIANS
HOLES
MATHEMATICAL OPERATORS
OXIDES
OXYGEN COMPOUNDS
PERTURBATION THEORY
QUANTUM OPERATORS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS