Nonequilibrium tunneling spectroscopy in carbon nanotubes

Yung Fu Chen, Travis Dirks, Gassem Al-Zoubi, Norman O. Birge, Nadya Mason

Research output: Contribution to journalArticle

Abstract

We report measurements of the nonequilibrium electron energy distribution in carbon nanotubes. Using tunneling spectroscopy via a superconducting probe, we study the shape of the local electron distribution functions, and hence energy relaxation rates, in nanotubes that have bias voltages applied between their ends. At low temperatures, electrons interact weakly in nanotubes of a few microns channel length, independent of end-to-end-conductance values. Surprisingly, the energy relaxation rate can increase substantially when the temperature is raised to only 1.5 K.

Original languageEnglish (US)
Article number036804
JournalPhysical review letters
Volume102
Issue number3
DOIs
StatePublished - Jan 20 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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