An. Rubtsov, RECIPROCITY SUM-RULE FOR METAL-SURFACES AND ITS APPLICATION TO THE PROBLEM OF SURFACE-PLASMON DISPERSION, Solid state communications, 90(12), 1994, pp. 799-802
Sum rule of a new type is obtained. On this base a simple model of met
al with modulated-jellium background is studied. Linear optical charac
teristics of surface are found to differ essentially from standard uni
form-jellium model. Positive surface-plasmon dispersion law on Ag is q
ualitatively explained.