title: Atomic-Scale Sources and Mechanism of Nanoscale Electronic Disorder in Bi2Sr2CaCu2O8+delta.
abstract: The randomness of dopant atom distributions in cuprate high-critical temperature superconductors has long been suspected to cause nanoscale electronic disorder. In the superconductor Bi2Sr2CaCu2O8+delta, we identified populations of atomic-scale impurity states whose spatial densities follow closely those of the oxygen dopant atoms. We found that the impurity-state locations are strongly correlated with all manifestations of the nanoscale electronic disorder. This disorder occurs via an unanticipated mechanism exhibiting high-energy spectral weight shifts, with associated strong superconducting coherence peak suppression but very weak scattering of low-energy quasi-particles.
authors.affiliation: Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY 14850, USA.
authors.forename: K
authors.initials: K
authors.lastname: McElroy
authors.forename: Jinho
authors.initials: J
authors.lastname: Lee
authors.forename: J A
authors.initials: JA
authors.lastname: Slezak
authors.forename: D-H
authors.initials: DH
authors.lastname: Lee
authors.forename: H
authors.initials: H
authors.lastname: Eisaki
authors.forename: S
authors.initials: S
authors.lastname: Uchida
authors.forename: J C
authors.initials: JC
authors.lastname: Davis