title: Coherent quasiparticle weight and its connection to high-T(c) superconductivity from angle-resolved photoemission.
abstract: We study the doping and temperature dependence of the single-particle coherent weight, z(A), for high- T(c) superconductors Bi(2)Sr(2)CaCu(2)O(8+x) using angle-resolved photoemission. We find that at low temperatures the coherent weight z(A) at (pi,0) is proportional to the carrier concentration x and that the temperature dependence of z(A) is similar to that of the c-axis superfluid density. We show that, for a wide range of carrier concentration, the superconducting transition temperature scales with the product of the low-temperature coherent weight and the maximum superconducting gap.
authors.affiliation: Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA.
authors.forename: H
authors.initials: H
authors.lastname: Ding
authors.forename: J R
authors.initials: JR
authors.lastname: Engelbrecht
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
authors.forename: J C
authors.initials: JC
authors.lastname: Campuzano
authors.forename: S C
authors.initials: SC
authors.lastname: Wang
authors.forename: H B
authors.initials: HB
authors.lastname: Yang
authors.forename: R
authors.initials: R
authors.lastname: Rogan
authors.forename: T
authors.initials: T
authors.lastname: Takahashi
authors.forename: K
authors.initials: K
authors.lastname: Kadowaki
authors.forename: D G
authors.initials: DG
authors.lastname: Hinks