Deviation from matthiessen's rule for thermal conductivity of quenched Zn-doped Cd crystals in the temperature range 5–20 K

Abstract

Quantitative deviations from Matthiessen's rule (DMR) for thermal conductivity of quenched, Zn-doped Cd single crystals have been calculated on the basis of thermal and electrical conductivity measurements of the metal. The observed nonlinearity of DMRmax versus β, where β is an electron-lattice defect interaction parameter, suggests that anisotropic effects of electron scattering are the most probable source of the DMR for Zn-doped Cd. We have also observed that DMRmax saturates itself, reaching a constant value for higher values of β.