ELECTRON-PHONON INTERACTION AND QUASI-PARTICLE DAMPING IN A LAYERED METAL

It is shown that in a layered metal (i) there exists a ''band'' of pho non excitations, (ii) for large wave vectors the longitudinal phonon s pectrum coincides with that of the two-dimensional high frequency ion plasmon, and (iii) the inelastic electron-high-frequency-phonon intera ction can produce the quasi-linear temperature dependence of the resis tivity rho approximately Tln(2T/OMEGA(c)) with a low value of the ener gy threshold OMEGA(c), thereby providing an explanation of the observe d quasi-linearity of the resistivity of Cu-0 superconductors in the no rmal state.