Electron transport in armchair single-wall carbon nanotubes

TL;DR

This paper investigates electron transport in armchair single-wall carbon nanotubes by calculating phonon scattering rates with an improved theory, and uses numerical methods to analyze their transport properties.

Contribution

It introduces an improved scattering theory within the tight-binding approximation to reconcile theoretical and experimental scattering rates.

Findings

Calculated phonon scattering rates align better with experimental data.

Numerical solutions of the Boltzmann equation reveal detailed electron transport behavior.

Monte Carlo simulations validate the transport model.

Abstract

The rates of electron scattering via phonons in the armchair single-wall carbon nanotubes were calculated by using the improved scattering theory within the tight-binding approximation. Therefore, the problem connected with the discrepancy of the scattering rates calculated in the framework of the classical scattering theory and ones predicted by experimental data was clarified. Then these results were used for the solving of the kinetic Boltzmann equation to describe electron transport properties of the nanotubes. The equation was solved numerically by using both the finite difference approach and the Monte Carlo simulation procedure.