title: Manifestation of the magnetic resonance mode in the nodal quasiparticle lifetime of the superconducting cuprates.
abstract: Studying the nodal quasiparticles in superconducting cuprates by photoemission with highly improved momentum resolution, we show that a new "kink" feature in the scattering rate is a key to uncover the nature of electron correlations in these compounds. Our data provide evidence that the main doping independent contribution to the scattering can be well understood in terms of the conventional Fermi liquid model, while the additional doping dependent contribution has a magnetic origin. This sheds doubt on applicability of a phonon-mediated pairing mechanism to high-temperature superconductors.
authors.affiliation: Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden, P.O.Box 270016, 01171 Dresden, Germany.
authors.forename: A A
authors.initials: AA
authors.lastname: Kordyuk
authors.forename: S V
authors.initials: SV
authors.lastname: Borisenko
authors.forename: A
authors.initials: A
authors.lastname: Koitzsch
authors.forename: J
authors.initials: J
authors.lastname: Fink
authors.forename: M
authors.initials: M
authors.lastname: Knupfer
authors.forename: B
authors.initials: B
authors.lastname: Büchner
authors.forename: H
authors.initials: H
authors.lastname: Berger
authors.forename: G
authors.initials: G
authors.lastname: Margaritondo
authors.forename: C T
authors.initials: CT
authors.lastname: Lin
authors.forename: B
authors.initials: B
authors.lastname: Keimer
authors.forename: S
authors.initials: S
authors.lastname: Ono
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Ando