Electron Transport and Hot Phonons in Carbon Nanotubes

2005/03/31 by Michele Lazzeri, M. Lazzeri, S. Piscanec +6 · 3 citations
Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Diamond and Carbon-based Materials Research #Graphene research and applications #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevlett.95.236802

published as Phys. Rev. Lett. 95, 236802 (2005) · 4 pages, 1 figure

openalex publication_date 2005/11/30 · arxiv created 2005/12/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We demonstrate the key role of phonon occupation in limiting the high-field ballistic transport in metallic carbon nanotubes. In particular, we provide a simple analytic formula for the electron transport scattering length, which we validate by accurate first principles calculations on (6, 6) and (11, 11) nanotubes. The comparison of our results with the scattering lengths fitted from experimental I-V curves indicates the presence of a nonequilibrium optical phonon heating induced by electron transport. We predict an effective temperature for optical phonons of thousands Kelvin.

Citations

• Generalized Gradient Approximation Made Simple

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