B. Huttner, OPTICAL-PROPERTIES OF POLYVALENT METALS IN THE SOLID AND LIQUID-STATE- ALUMINUM, Journal of physics. Condensed matter, 6(13), 1994, pp. 2459-2474
A semiphenomenological theory is proposed for the calculation of the f
requency and temperature dependences of the optical properties of poly
valent metals. Utilizing the concept of parallel bands, the transverse
optical conductivity is decomposed into a nearly-free-electron part a
nd in an interband part. The theory needs only one fitting parameter,
the unknown electron-electron scattering frequency above the Fermi ene
rgy. The complete set of optical quantities is calculated for aluminiu
m for a large frequency range (0.01-50 eV) and from T = 300 to 2000 K.