title: Current-driven resonances in magnetic multilayers.
abstract: We describe complex variations in resistance of a Co/Cu multilayer, generated by injection of an adjustable dc current density ( approximately 10(9) A/cm(2)) via a point contact. We attribute these variations to coupling of current-induced spin waves to lattice vibrations, leading especially to current-driven resonant excitations of phonons. We propose a simple model to explain the observed structured behavior of the variations as a function of the applied current and magnetic field.
authors.affiliation: Grenoble High Magnetic Field Laboratory, Max-Planck-Institut für Festkörperforschung and Centre National de la Recherche Scientifique, BP 166, France.
authors.forename: M
authors.initials: M
authors.lastname: Tsoi
authors.forename: V
authors.initials: V
authors.lastname: Tsoi
authors.forename: J
authors.initials: J
authors.lastname: Bass
authors.forename: A G M
authors.initials: AG
authors.lastname: Jansen
authors.forename: P
authors.initials: P
authors.lastname: Wyder