Surface electronic fluctuations in metals
Falkovsky L.A., Klarna S.
The effect of a surface on electronic fluctuations in anisotropic metals is theoretically studied. The Coulomb interaction of the electron-hole excitations is taken into account selfconsistently. A system of the Boltzmann equation for electronic fluctuations and the Maxwell equations for the interaction field is solved with required boundary conditions. The observed inelastic scattered light out metal is a result of the collective electron interaction with a radiation inside metal. The scattering cross section consists of the bulk contribution of electron hole pairs and plasmons, which differs from the scattering by infinite metal only in the effect of the penetration of radiation in skin layer. The surface contribution to the cross section is attributed to the electromagnetic excitations of the nonradiative into vacuum surface plasmons (the sharp peak) and the radiative surface plasmons (the continuum).