title: Dispersion anomalies in bilayer cuprates and the odd symmetry of the magnetic resonance.
abstract: We demonstrate that recent angle resolved photoemission data in bilayer cuprate superconductors imply that scattering of electrons between bonding and antibonding bands is strong compared to scattering within these bands. As a consequence, the resulting data can be reproduced only by a model which assumes that the electrons are interacting with a bosonic mode that is odd with respect to the layer indices. This odd symmetry is a unique property of the magnetic resonance observed by inelastic neutron scattering.
authors.affiliation: Institut für Theoretische Festkörperphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Eschrig
authors.forename: M R
authors.initials: MR
authors.lastname: Norman