Current-driven resonances in magnetic multilayers |
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| Authors: | Tsoi M Tsoi V Bass J Jansen A G M Wyder P |
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| Institution: | Grenoble High Magnetic Field Laboratory, Max-Planck-Institut für Festk?rperforschung and Centre National de la Recherche Scientifique, BP 166, France. |
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| 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. |
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