Electron characteristic loss spectra of molybdenum dichalcogenides

The complete sets of the fundamental optical functions of molybdenum dichal cogenides have been considered for the first time. The energies of their bu lk and surface plasmons of two types are determined. It is found that the e nergies of long-wavelength plasmons correlate with the energies of the deep minima in the reflectivity and epsilon(2)E(2) spectra and the maxima in th e reflectivity phase spectra. (C) 2000 MAIK "Nauka/Interperiodica".