Surface plasma waves attenuation length at IR frequencies. Determination of the conduction electron scattering parameter at the metal-dielectric interface

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Abstract
At room temperature and for a radiation in the near infrared region the surface impedance of metals is very sensitive to the scattering parameter p of the conduction electrons at the metal-dielectric interface. At these wavelengths and for a completely diffuse scattering, (p = 0), we show that a close estimate of the surface plasma waves (SPW) attenuation length is given by a simplified formula in which the influence of the temperature appears clearly via the dc bulk conductivity σ. We suggest then an experimental procedure for the determination of p