Lattice specific heat of carbon nanotubes

TL;DR

This paper calculates the lattice specific heat of armchair carbon nanotubes using a microscopic model, revealing temperature-dependent behaviors and diameter-influenced thermal transport properties.

Contribution

It applies a microscopic phonon model to analyze the specific heat and thermal transport in carbon nanotubes, highlighting diameter effects.

Findings

Specific heat varies with temperature in distinct low and high regimes.

Small diameter nanotubes exhibit high thermal conductivity.

The model confirms expected temperature-dependent behaviors.

Abstract

The lattice specific heat of carbon nanotubes is evaluated within the microscopic model proposed by Mahan and Jeon, published in the Physical Review B, in 2004. Phonons are considered for a single wall carbon nanotube in the armchair configuration. As expected, low temperature and high temperature regions show different behavior of specific heat. Carbon nanotubes are also displaying a very interesting lattice transport depending on the diameter, with a rather high thermal conductivity for small diameters.