Geometrical Dependence of High-Bias Current in Multiwalled Carbon Nanotubes

TL;DR

This paper investigates how the geometry of multiwalled carbon nanotubes influences their high-bias current, revealing that smaller diameters and longer lengths reduce current due to electron-phonon interactions and Zener tunneling.

Contribution

It provides a detailed analysis of the geometrical dependence of high-bias current in multiwalled carbon nanotubes, linking it to electron-phonon scattering and Zener tunneling effects.

Findings

Current decreases with smaller shell diameter.

Current decreases with increased length.

Geometrical factors influence high-bias transport mechanisms.

Abstract

We have studied the high-bias transport properties of the different shells that constitute a multiwalled carbon nanotube. The current is shown to be reduced as the shell diameter is decreased or the length is increased. We assign this geometrical dependence to the competition between electron-phonon scattering process and Zener tunneling.