Fully self-consistent determination of transport properties in Eu-rich EuO

The magnetization, the Curie temperature, the resistivity, the electronic thermal conductivity, the Wiedemann-Franz ratio, the conduction-electron density and the scattering time of Eu-rich EuO are calculated fully self-consistently within a microscopic model including the exchange of the conduction and the oxygen-vacancy electrons with and the exchange between the Eu spins. The spectacular metal-insulator transition near the Curie temperature is reproduced quantitatively. The Wiedemann-Franz law holds in the metallic phase, where the system is supposed to form a Fermi liquid, but it is invalid for the insulator. For higher oxygen-vacancy concentrations there is a jump in the scattering time (mobility) of the conduction electrons at the Curie temperature, which is also observed in the experiment.