Band structure, magnetic fluctuations, and quasiparticle nature of the two-dimensional three-band Hubbard model

Journal Article · Tue Dec 01 04:00:00 EST 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.46.14317· OSTI ID:6889892

Ding, H; Lang, G H; Goddard, III, W A ^[1]

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1. Materials Simulation Center, Beckman Institute, California Institute of Technology, Pasadena, California 91125 (United States)

A single hole doped into the CuO[sub 2] plane of a high-[ital T][sub [ital c]] superconductor is studied via exact calculations of the three-band Hubbard model (large-[ital U] limit) on a 4[times]4 periodic cluster. The quasiparticle band has its bottom at [bold k]=([pi]/2,[pi]/2) and disperses strongly towards [Gamma] and [ital X] with a dispersion 1.7[ital J][sub [ital d][ital d]]=0.22 eV. The quasiparticle has a nearly isotropic effective mass ([similar to]4[ital m][sub [ital e]]) and the dressing effects are well localized ([similar to]8 A) with characteristic features of both the three-spin polaron and the Zhang-Rice singlet (although solutions of the [ital t]-[ital J] model are substantially different).

• OSTI ID: 6889892
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 46:21; 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
BAND THEORY
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
POLARONS
QUASI PARTICLES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS