Abstract
The size dependence of the Fermi energy of conduction electrons has been analytically evaluated and its oscillations have been calculated in the framework of the cylindrical well model. The conductivity tensor components for a metal wire with the radius ρ0 have been calculated with the use of the expansion in powers of ρ0/λ, where λ is the wavelength of incident light. The influence of the dimension of the systems has been established by comparing the results of the calculations of the optical conductivity of thin wires and films for Au, Al, and Pb metals. According to the results of the calculations, the real and imaginary parts of the conductivity depend substantially on the size and frequency. The difference between the results obtained for Pb and Au metals has been explained by the different relaxation times of electrons in nanowires that are homogeneous in the thickness.
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