Influence of excited electron lifetimes on the electronic structure of carbon nanotubes

Abstract

We have studied the dynamics of electrons in single wall carbon nanotubes using femtosecond time-resolved photoemission. The lifetime of electrons excited to the pi* bands is found to decrease continuously from 130 fs at 0.2 eV down to less than 20 fs at energies above 1.5 eV with respect to the Fermi level. This should lead to a significant lifetime--induced broadening of the characteristic van Hove singularities in the nanotube DOS.

6 pages, 4 figures

References in corpus (1)

• Inelastic lifetimes of hot electrons in real metals

Cited by in corpus (6)

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• Absorption spectroscopy of individual single-walled carbon nanotubes
• Electronic structure and dynamics of optically excited single-wall carbon nanotubes
• One-Dimensional Energy Dispersion of Single-Walled Carbon Nanotubes by Resonant Electron Scattering
• Intersubband plasmon excitations in doped carbon nanotubes
• Anisotropic Decay Dynamics of Photoexcited Aligned Carbon Nanotube Bundles