Thermal conductance for single wall carbon nanotubes |
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| Authors: | Qingrong Zheng Gang Su Jian Wang Hong Guo |
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| Institution: | (1) Department of Physics, The Graduate School of the Chinese Academy of Sciences, PO Box 3908, Beijing 100039, PR China, CN;(2) Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, HK;(3) Centre for the Physics of Materials, Department of Physics, McGill University, Montreal, Quebec, Canada H3A 2T8, CA |
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| Abstract: | We report a theoretical analysis of the phonon thermal conductance, κ(T), for single wall carbon nanotubes (SWCN). In a range of low temperatues up to 100 K, κ(T) of perfect SWCN is found to increase with temperature, approximately, in a parabolic fashion. This is qualitatively consistent
with recent experimental measurements where the tube-tube interactions are negligibly weak. When the carbon-carbon bond length
is slightly varied, κ(T) is found to be qualitatively unaltered which implies that the anharmonic effect does not change the qualitative behavior
of κ(T).
Received 12 June 2001 |
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| Keywords: | PACS 61 46 +w Nanoscale materials: clusters nanoparticles nanotubes and nanocrystals – 44 10 +i Heat conduction – 63 22 +m Phonons or vibrational states in low-dimensional structures aaand nanoscale materials |
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