  We recently developed an approach for calculation of the electron-phonon
(electron-ion in a more general case) coupling in materials based on
tight-binding molecular dynamics simulations. In the present work we utilize
this approach to study partial contributions of inter- and intraband electron
scattering events into total electron-phonon coupling in Al, Au, Cu elemental
metals and in AlCu alloy. We demonstrate that the interband scattering plays an
important role in electron-ion energy exchange process in Al and AlCu, whereas
intraband $d-d$ transitions are dominant in Au and Cu. Moreover, inter- and
intraband transitions exhibit qualitatively different dependencies on the
electron temperature. Our findings should be taken into account for
interpretation of experimental results on electron-phonon coupling parameter.
