Superconductivity in the charge-transfer and Mott-Hubbard regimes of the three-band Hubbard model

Journal Article · Fri Nov 01 00:00:00 EST 1996 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF00768450· OSTI ID:457219

Kuroki, Kazuhiko; Aoki, Hideo ^[1]

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1. Univ. of Tokyo, Hongo (Japan)

An extensive quantum Monte Carlo calculation is performed to probe a possible electronic origin of the high-temperature superconductivity in cuprates by studying Emery`s three-band Hubbard model. The d{sub x{sup 2}-y{sup 2}} pairing correlation is found to grow with the system size when the d electron repulsion U{sub d} or the d-p level off-set {Delta}{epsilon} exceed the one-electron band width, where the correlation also starts to increase with U{sub d} or {Delta}{epsilon}. The authors have detected this in both the charge-transfer and Mott-Hubbard regimes for appropriate doping concentrations.

• Sponsoring Organization: USDOE
• OSTI ID: 457219
• Report Number(s): CONF-960808-; ISSN 0022-2291; CNN: Grant 07237209; Grant 08740266; TRN: 97:012215
• Journal Information: Journal of Low Temperature Physics, Vol. 105, Issue 3-4; Conference: 3. international conference on physics and chemistry of molecular and oxide superconductors, Karlsruhe (Germany), 2-6 Aug 1996; Other Information: PBD: Nov 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
SUPERCONDUCTIVITY
ELECTRON CORRELATION
HUBBARD MODEL
MONTE CARLO METHOD
HIGH-TC SUPERCONDUCTORS