Phonons and specific heat of linear dense phases of atoms physisorbed in the grooves of carbon nanotube bundles

TL;DR

This paper investigates the vibrational properties and specific heat of dense atomic phases adsorbed in carbon nanotube grooves, deriving analytical phonon dispersion relations for Xe, Kr, and Ar.

Contribution

It provides analytical expressions for phonon dispersion relations in one-dimensional adsorbed atomic phases on nanotubes, applied to noble gases.

Findings

Analytical phonon dispersion relations derived.

Specific heat calculations for Xe, Kr, and Ar.

Insights into vibrational properties of adsorbed atoms.

Abstract

The vibrational properties (phonons) of a one-dimensional periodic phase of atoms physisorbed in the external groove of the carbon nanotube bundle are studied. Analytical expressions for the phonon dispersion relations are derived. The derived expressions are applied to Xe, Kr and Ar adsorbates. The specific heat pertaining to dense phases of these adsorbates is calculated.