Localization of electronic states by fullerene charges in carbon nanotubes

J. González and F. Guinea
Phys. Rev. B 71, 193409 – Published 31 May 2005

Abstract

We study the effects of the electrostatic interaction produced by charged metallofullerenes encapsulated in carbon nanotubes, showing that they are able to modify locally the electronic density of states in the hybrid system. In the cases where the interaction is felt as an attractive potential by the electrons in the nanotube, localized electronic states are formed in the nanotubes around the position of the fullerenes. This produces an effective narrowing of the gap in semiconducting nanotubes over a distance of a few nanometers, in agreement with the spatial modulation of the gap observed in the experiments.

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  • Received 5 November 2004

DOI:https://doi.org/10.1103/PhysRevB.71.193409

©2005 American Physical Society

Authors & Affiliations

J. González1 and F. Guinea2

  • 1Instituto de Estructura de la Materia, Consejo Superior de Investigaciones Científicas, Serrano 123, 28006 Madrid, Spain
  • 2Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 Madrid, Spain

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Issue

Vol. 71, Iss. 19 — 15 May 2005

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