title: Thermal conductance of an individual single-wall carbon nanotube above room temperature.
abstract: The thermal properties of a suspended metallic single-wall carbon nanotube (SWNT) are extracted from its high-bias (I-V) electrical characteristics over the 300-800 K temperature range, achieved by Joule self-heating. The thermal conductance is approximately 2.4 nW/K, and the thermal conductivity is nearly 3500 Wm(-1)K(-1) at room temperature for a SWNT of length 2.6 mum and diameter 1.7 nm. A subtle decrease in thermal conductivity steeper than 1/T is observed at the upper end of the temperature range, which is attributed to second-order three-phonon scattering between two acoustic modes and one optical mode. We discuss sources of uncertainty and propose a simple analytical model for the SWNT thermal conductivity including length and temperature dependence.
authors.affiliation: Department of Chemistry and Laboratory for Advanced Materials, Stanford University, California 94305, USA.
authors.forename: Eric
authors.initials: E
authors.lastname: Pop
authors.forename: David
authors.initials: D
authors.lastname: Mann
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
authors.forename: Kenneth
authors.initials: K
authors.lastname: Goodson
authors.forename: Hongjie
authors.initials: H
authors.lastname: Dai