Abstract
A single hole doped into the plane of a high- 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 1.7=0.22 eV. The quasiparticle has a nearly isotropic effective mass (∼4) 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