Electron–phonon interaction in disordered beryllium films

Inelastic electron scattering in Be films is investigated experimentally by measuring the localization corrections to the conductivity. The existence of the dependence τϕ ∼ T−2 for T > T0, observed earlier for semimetal films and its absence at T < T0 are confirmed. The temperature T0 corresponds to the equality of the thermal phonon wavelength to the film thickness. A comparison of the obtained experimental results with the theory and with the calculated values of the sound velocity indicates that the inelastic scattering of electrons by transverse phonons plays a decisive role.