Anisotropy of the Optical Properties of Metal Nanodisks

摘要

Expressions for the diagonal components of the polarizability tensor, absorption cross sections, and size dependences of the frequencies of the surface plasmon resonance of metal nanodisks are obtained within the classical approximation. The frequency and size dependences of these characteristics are calculated for disks made of different metals and having different aspect ratios. The influence of the aspect ratio on evolution of the frequency dependences of the polarizability tensor components and absorption cross section is analyzed. The most significant factors, affecting splitting of the surface plasmon resonance in metal nanodisks with a low aspect ratio, are determined.