2003/12/23 by Takahiro Yamamoto, Satoshi Watanabe, Kazuyuki Watanabe · 1 citation
Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Carbon nanotube #Condensed matter physics #Conductance #Conductance quantum #Graphene research and applications #Materials science #Metal #Nanotechnology #Phonon #Physics #Quantization (signal processing) #Quantum mechanics #Quantum well #RADIUS #Thermal #Thermal conductivity #Thermal properties of materials #Thermodynamics #cond-mat.mtrl-sci #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevlett.92.075502
published as Phys. Rev. Lett. 92, 075502 (2004) · 4 pages, 5 figures. accepted for publication in Phys. Rev. Lett
arxiv created 2003/12/23 · openalex publication_date 2004/02/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 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.