Electrical and thermal transport in metallic single-wall carbon nanotubes on insulating substrates

By Eric Pop, D. Mann, Kenneth E. Goodson, Hongjie Dai. 2006

355 citations recorded by the source corpus.

We analyze transport in metallic single-wall carbon nanotubes (SWCNTs) on insulating substrates over the bias range up to electrical breakdown in air. To account for Joule self-heating, a temperature-dependent Landauer model for electrical transport is coupled with the heat conduction equation along the nanotube. The electrical breakdown voltage of SWCNTs in air is found to scale linearly with their length, approximately as 5V∕μm; we use this to deduce a thermal conductance between SWCNT and substrate g≈0.17±0.03WK−1m−1 per tube length, which appears limited by the SWCNT-substrate interface rather than the thermal properties of the substrate itself. We examine the phonon scattering mechanisms that limit electron transport, and find the strong temperature dependence of the optical phonon absorption rate to have a remarkable influence on the electrical resistance of micron-length nanotubes. Further analysis reveals that unlike in typical metals, electrons are responsible for less than 15% of the total therm...

Subfields: Civil and Structural Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/854bb2351c25bb65237b27f144350b1a1b49593e

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In Civil and Structural Engineering

  1. Eric Pop
  2. M. Panzer
  3. Amy M. Marconnet
  4. Kenneth E. Goodson

In Materials Chemistry

  1. M. Panzer
  2. Amy M. Marconnet
  3. Kenneth E. Goodson
  4. Eric Pop
  5. P. Hopkins
  6. Gang Zhang
  7. Yong‐Wei Zhang

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