Scaling of excitons in carbon nanotubes

Details Scaling of excitons in carbon nanotubes Scaling of excitons in carbon nanotubes

2004-02-03

arxiv.org/abs/cond-mat/0402091v2

Phys. Rev. Lett. 92, 257402 (2004)

Physics

Condensed Matter

Materials Science

4 pages, 3 figures, accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.92.257402

Light emission from carbon nanotubes is expected to be dominated by excitonic
recombination. Here we calculate the properties of excitons in nanotubes
embedded in a dielectric, for a wide range of tube radii and dielectric
environments. We find that simple scaling relationships give a good description
of the binding energy, exciton size, and oscillator strength.

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