Electron-phonon interaction function for metals from the temperature dependence of the electrical resistivity

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Abstract
A method for determining the electron-phonon interaction function from the temperature dependence of the electrical resistivity for metals, based on a numerical deconvolution of the approximate formula for resistivity, is proposed. The method is tested for model resistivity and then applied for measured electrical resistivity of gold samples with a different residual resistance ratio. By comparison with the known phonon density of states of gold it is shown that the method can yield non-trivial information about phonon states and the electron-phonon interaction. The method, based on relatively simple experimental information, is recommended for those materials where it is difficult to investigate phonon structure and electron-phonon interaction by other means.