Universal density of states for carbon nanotubes

  • Mintmire J
  • White C
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Abstract

The density of states in the vicinity of the Fermi level of single-wall carbon nanotubes can be expressed in terms of a universal relationship that depends only on whether the nanotube is metallic or semiconducting. We compare the predictions of this approximate relationship with densities of states calculated using first-principles band structure results. These comparisons show that this approximation works well for energies within about 1 eV of the Fermi level.

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Authors

  • J. W. Mintmire

  • C. T. White

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