  We report the first systematic measurements of the Raman scattering by
electrons in elemental metals of Al, Mo, Nb, Os, Pb, Re, Ta, Ti, V, W and
metallic compound La$B_6$. Experimental spectra are modelled on the base of the
band structures, calculated within the density functional theory, taking
properly into account the effects of electron-phonon scattering. The agreement
between our measured and calculated spectra is excellent for the variety of
metals, thus providing estimates for the electron-phonon coupling constants and
temperature-dependent relaxation rates. The method can be applied for other
metallic materials to evaluate an electron-phonon coupling as an alternative to
the transport and optical measurements.

Strongly Correlated Electrons;Materials Science;Superconductivity