| Abstract: | Granular aluminum films deposited on rough surfaces of NaCl and KCl single crystals form a two-layer coating. In the lower
layer, a low-frequency band of plasma resonance is excited due to the joint action of a light-wave field and a field induced
by granules-dipoles. In a small amount of granules of the upper layer isolated from each other, a high-frequency band with
a frequency ω0 of natural electron oscillations in the granules is excited. Using the measured frequencies ω0 and the known dielectric constants of NaCl and KCl, a plasma frequency of aluminum is calculated that agrees well with the
known plasma frequency of solid samples.
Kharkov State University, 4 Svoboda Sq., Kharkov, 310077, Ukraine. Translated from Zhurnal Prikladnoid Spektroskopii, Vol.
66, No. 6, pp. 853–856, November–December, 1999. |
