title: Quasiparticle liquid in the highly overdoped Bi(2)Sr(2)CaCu(2)O(8+delta).
abstract: Results from the study of a highly overdoped (OD) Bi(2)Sr(2)CaCu(2)O(8+delta) with a T(c) = 51 K using angle-resolved photoemission spectroscopy are presented. We observe a sharp peak in the spectra near ( pi,0) that persists well above T(c), a nodal self-energy which approaches that seen for the Mo(110) surface state, and a more k-independent line shape at the Fermi surface than the lower-doped cuprates. This allows for a realistic comparison of the lifetime values to the experimental resistivity measurements. These observations point to the validity of the quasiparticle picture for the OD even in the normal state.
authors.affiliation: Department of Physics, University of Connecticut, 2152 Hillside Road U-46, Storrs, Connecticut 06269-3046, USA.
authors.forename: Z M
authors.initials: ZM
authors.lastname: Yusof
authors.forename: B O
authors.initials: BO
authors.lastname: Wells
authors.forename: T
authors.initials: T
authors.lastname: Valla
authors.forename: A V
authors.initials: AV
authors.lastname: Fedorov
authors.forename: P D
authors.initials: PD
authors.lastname: Johnson
authors.forename: Q
authors.initials: Q
authors.lastname: Li
authors.forename: C
authors.initials: C
authors.lastname: Kendziora
authors.forename: Sha
authors.initials: S
authors.lastname: Jian
authors.forename: D G
authors.initials: DG
authors.lastname: Hinks