Linear-response calculation of electron-phonon coupling parameters

An ab initio method for calculating electron-phonon coupling parameters is presented. The method is an extension of the plane-wave-based linear-response method for the calculation of lattice dynamics. Results for the mass enhancement parameter $\lambda$ and the electron-phonon spectral function ${\alpha }^{2}F\left(\omega \right)$ for Al, Pb, and Li are presented. Comparisons are made to available experimental data.