Universal Features of Quantized Thermal Conductance of Carbon Nanotubes
Abstract
The universal features of quantized thermal conductance of carbon nanotubes (CNTs) are revealed through a theoretical analysis based on the Landauer theory of heat transport. The phononderived thermal conductance of semiconducting CNTs exhibits a universal quantization in the lowtemperature limit, independent of the radius or atomic geometry. The temperature dependence follows a single curve given in terms of temperature scaled by the phonon energy gap. The thermal conductance of metallic CNTs has an additional contribution from electronic states, which also exhibits quantized behavior up to room temperature.
 Publication:

Physical Review Letters
 Pub Date:
 February 2004
 DOI:
 10.1103/PhysRevLett.92.075502
 arXiv:
 arXiv:condmat/0312600
 Bibcode:
 2004PhRvL..92g5502Y
 Keywords:

 81.07.De;
 44.10.+i;
 63.22.+m;
 Nanotubes;
 Heat conduction;
 Phonons or vibrational states in lowdimensional structures and nanoscale materials;
 Condensed Matter  Materials Science;
 Condensed Matter  Statistical Mechanics
 EPrint:
 4 pages, 5 figures. accepted for publication in Phys. Rev. Lett