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Investigation of the Temperature Dependence of the Conduction Electron Spin Resonance Parameters in Silver with Many-Body Effects and g Anisotropy

Temperature dependence of the g value, linewidth and peak height of the conduction electron spin resonance in silver has been investigated with the transmission method at the frequency of 22.7 GHz over the temperature range 1.7 to 43 K. We have observed a g shift at the highest temperatures due to the positive exchange coupling larger than g anisotropy, in accordance with the theoretical model by Freedman and Fredkin (1975). Phonon-induced spin relaxation has been found to be proportional to the phonon-induced momentum relaxation of electrons.