Hall effect in concentrated alloys

Coherent-potential approximation has been used to derive an expression for the Hall coefficient in the two $s-d$ hybridized band model of Brouers and Vedyayev which has been used to describe the conductivity of disordered alloys of noble and transition metals. We investigate the effect of hybridization and $d$ disorder on the alloy Hall coefficient, and this allows us to generalize and improve the discussion already presented by Levin et al. in a one-band picture.