Coherent phenomena in inelastic backscattering of electrons from disordered media

The phenomenon of weak localization in an inelastic-scattering channel is considered in the context of the reflection of moderate-energy electrons with fixed energy loss from a disordered medium. The localization features in the backscattering angular spectrum are found to be manifested under the condition of strong interference, ω much-lt γ (here ℎω is the energy loss and γ is the frequency of electron collisions). Unlike the elastic-scattering channel, the center of the enhanced peak is shown to be displaced relative to the exactly backward direction under the condition of oblique incidence of the electrons on a disordered sample surface