Application of force-force correlation functions to the problem of resistivity anomaly at high temperatures

Force-force correlation fUnctions are applied to the problem of resistivity anomaly at high temperatures. In order to go beyond the usual Bloch-Grueneisen law the electrical resistivity is calculated by including multiple scattering corrections via partial summations of higher order perturbation contributions of the electron-phonon interaction. For the used approximations the deviation-from-linearity effect is obtained straight-forward. The main result of the calculation is the resistivity formula containing two parameters: the Debye temperature and the interaction parameter. The numerical results are qualitatively compared with the resistivity measurements of Nb at 300 K performed in another paper