THE EFFECT OF THE ELECTRON-PHONON INTERACTION ON GIANT MAGNETORESISTANCE IN MAGNETIC MULTILAYERS

We built electron and phonon free energies and attempted to investigat e the effect of the electron-phonon interaction on giant magnetoresist ance in magnetic multilayers. Starting from a jellium-like model, we f ound that the electron-phonon interaction can have an important effect on the spin splitting of electronic energy band. The expression of gi ant magnetoresistance has been obtained by considering the spin splitt ing of electronic energy band, indicating that the effect of phonon co uld not be neglected. Numerical calculations using our approach demons trate the agreement between experimental and theoretical values.