Abstract
A theory is proposed which accounts for the anomalous temperature dependence of the thermoelectric power as observed for amorphous, ferromagnetic alloys. This unusual behaviour is shown to originate essentially in general symmetry properties of the inelastic electronic spin-flip scattering rates. The different elastic cross-sections for spin-up and spin-down electrons due to sd-hybridisation effects have to be considered as well. These mechanisms manifest themselves in a general formula which is derived in this paper for the thermopower of amorphous ferromagnets, without specifying in detail the underlying scattering mechanism. From this general result explicit expressions for the thermoelectric power are derived for the spin-wave regime and, within a mean field approach, for temperatures around the Curie point.
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