A model dielectric response function for metallic nanotube ropes

TL;DR

This paper introduces a model dielectric function for metallic nanotube ropes, emphasizing charge excitations and intertube Coulomb interactions, with considerations for experimental relaxation effects.

Contribution

It presents a novel dielectric response model specifically for metallic nanotube ropes, incorporating bosonic charge excitations and intertube Coulomb interactions.

Findings

Charge excitations significantly influence screening.

Intertube Coulomb interactions alter dielectric properties.

Relaxation processes affect the dielectric response.

Abstract

We propose a model dielectric function for ropes of single-walled nanotubes distributed in a glassy graphite host medium. We study the significance of the bosonic charge excitations arising in interacting quasi-one-dimensional systems in the screening processes. We also pay special attention to the role of the intertube Coulomb interactions. In order to compare with experiments, weak relaxation processes are also considered in the relaxation-time approximation.