The inelastic Coulomb scattering rate ${\mathrm{\tau }}_{\mathrm{in}}^{\mathrm{-}1}$ of extended electrons by localized ones is considered and shown to be proportional to ${\mathit{T}}^2$(lnT${)}^{\mathit{d}+1\mathrm{}}$, where d is the dimensionality. This nonlinear dependence appears surprisingly linear over significant temperature regions, and its magnitude is large enough to account for ${\mathrm{\tau }}_{\mathrm{in}}$ of, e.g. (normal- and super-)conducting oxides.

• Received 5 January 1990

DOI:https://doi.org/10.1103/PhysRevB.42.927