Classical absorption in small metal particles and thin films

TL;DR

This paper investigates how small metal particles and thin films absorb electromagnetic energy through electric dipole interactions, using both phenomenological and microscopic models that include screening and relaxation effects.

Contribution

It provides a comprehensive analysis of electric dipole absorption in small metal structures, incorporating Thomas-Fermi screening and Drude relaxation in both phenomenological and microscopic frameworks.

Findings

Derived expressions for absorption in diffusive approximation

Accounted for screening and relaxation effects

Bridged phenomenological and microscopic approaches

Abstract

We study the electric dipole absorption in small metal particles and thin films in a longitudnal electric field. In diffusive approximation, we give both the phenomenological and microscopic derivations with the account for Thomas-Fermi screening and Drude relaxation.