Unusually High Thermal Conductivity of Carbon Nanotubes

Physics – Condensed Matter – Materials Science

Scientific paper

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4 pages 3 figures (5 postscript files), submitted for publication

Scientific paper

10.1103/PhysRevLett.84.4613

Combining equilibrium and non-equilibrium molecular dynamics simulations with accurate carbon potentials, we determine the thermal conductivity $\lambda$ of carbon nanotubes and its dependence on temperature. Our results suggest an unusually high value ${\lambda}{\approx}6,600$~W/m$\cdot$K for an isolated (10,10) nanotube at room temperature, comparable to the thermal conductivity of a hypothetical isolated graphene monolayer or diamond. Our results suggest that these high values of $\lambda$ are associated with the large phonon mean free paths in these systems; substantially lower values are predicted and observed for the basal plane of bulk graphite.

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