Universal Features of Quantized Thermal Conductance of Carbon Nanotubes

Abstract

The universal features of quantized thermal conductance of carbon nanotubes (CNTs) are revealed through theoretical analysis based on the Landauer theory of heat transport. The phonon-derived thermal conductance of semiconducting CNTs exhibits a universal quantization in the low temperature 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.

4 pages, 5 figures. accepted for publication in Phys. Rev. Lett

References in corpus (5)

• Thermal transport measurements of individual multiwalled nanotubes
• Quantized thermal conductance of dielectric quantum wires
• Heat Transport in Mesoscopic Systems
• Quantum energy flow in mesoscopic dielectric structures
• Fractional Exclusion Statistics and the Universal Quantum of Thermal Conductance: A Unifying Approach

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