  The phonon and electronic properties, the Eliashberg function and the
temperature dependence of resistance of electride Ca2N are investigated by the
DFT-LDA plane-wave method. The phonon dispersion, the partial phonon density of
states and the atomic eigenvectors of zero-center phonons are studied. The
electronic band dispersion and partial density of states conclude that Ca2N is
a metal and the Ca 3p, 4s and N 2p orbitals are hybridized. For the analysis of
an electron - phonon interaction (EPI) and its contribution to resistance the
Eliashberg function was calculated and a temperature dependence of resistance
caused EPI was found. The present results are in good agreement with experiment
data.
