Manifestation of the magnetic resonance mode in the nodal quasiparticle lifetime of the superconducting cuprates
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.
Leibniz Inst Festkorper & Werkstoffforsch Dresden, D-01171 Dresden, Germany. Natl Acad Sci Ukraine, Inst Met Phys, UA-03142 Kiev, Ukraine. Ecole Polytech Fed Lausanne, Inst Phys Mat Complexe, CH-1015 Lausanne, Switzerland. Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany. Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan. Kordyuk, AA, Leibniz Inst Festkorper & Werkstoffforsch Dresden, POB 270016, D-01171 Dresden, Germany.
ISI Document Delivery No.: 832KJ
Record created on 2006-10-03, modified on 2016-08-08