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

Hong-Qiang Ding, Gladys H. Lang, and William A. Goddard, III
Phys. Rev. B 46, 14317(R) – Published 1 December 1992
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Abstract

A single hole doped into the CuO2 plane of a high-Tc superconductor is studied via exact calculations of the three-band Hubbard model (large-U limit) on a 4×4 periodic cluster. The quasiparticle band has its bottom at k=(π/2,π/2) and disperses strongly towards Γ and X with a dispersion 1.7Jdd=0.22 eV. The quasiparticle has a nearly isotropic effective mass (∼4me) and the dressing effects are well localized (∼8 Å) with characteristic features of both the three-spin polaron and the Zhang-Rice singlet (although solutions of the t-J model are substantially different).

  • Received 30 September 1992

DOI:https://doi.org/10.1103/PhysRevB.46.14317

©1992 American Physical Society

Authors & Affiliations

Hong-Qiang Ding, Gladys H. Lang, and William A. Goddard, III

  • Materials Simulation Center, Beckman Institute, California Institute of Technology, Pasadena, California 91125

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Issue

Vol. 46, Iss. 21 — 1 December 1992

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