On the temperature independent resistivity of impurities diluted un noble hosts

V.P. RAMUNNI, N.A. DE OLIVEIRA Y A. TROPER

MODERN PHYSICS LETTERS B

WORLD SCIENTIFIC PUBLISHING CO.

Lugar: Karlsruhe, Germany; Año: 2004 vol. 18 p. 149 - 156

0217-9849

We discuss the temperature independent resistivity of s–p impurities and rare earth impurities diluted in noble hosts, using a T-matrix formulation. We take into account translational symmetry breaking and therefore a nonlocal charge potential is obtained. The effect of volume difference between impurity and host elements is also considered in the calculation. In the case of "magnetic" impurities (i.e. almost all rare earth impurities) we calculate the spin disorder resistivity, obtaining a charge potential renormalized De Gennes–Friedel spin disorder resistivity. Our numerical results describe the available experimental data quite well.