Absorption of electromagnetic radiation by an ordered composite based on a cubic lattice of metallic nanodimers

The optical properties of an ordered nanocomposite based on a cubic lattice of metallic nanodimers are studied. The expressions for the frequency dependencies of the effective dielectric permittivity and magnetic permeability of the nanocomposite taking into account relaxation processes in metallic inclusions are obtained. The fact of the presence of the “blue” shift of the maximum of the imaginary part of the electric polarizability of the elementary cell, caused by collective effects, has been established. The frequency range in which the real parts of the effective permittivities are negative is determined; therefore, the nanocomposite under study is a “left” medium.