The role of self-heating and hot-phonons in metallic single walled carbon nanotubes

Details The role of self-heating and hot-phonons in metallic single walled carbon nanotubes The role of self-heating and hot-phonons in metallic single walled carbon nanotubes

2006-02-15

arxiv.org/abs/cond-mat/0602366v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

The role of self-heating and hot-phonons on electronic transport in metallic single walled carbon nanotube is examined by solving a coupled electron-optical phonon (OP) Boltzmann transport equation and the classical heat equation. We find that self-heating reduces the high bias conductance, thus explaining the short OP mean free paths observed experimentally, while the non-equilibrium OP population reduces the overall current level. Comparison with experimental data shows that for tubes on a substrate, no significant population of hot phonons builds up under the normal range of applied bias. These results shed light on OP phonon decay paths in carbon nanotubes.

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