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Raman modes of metallic carbon nanotubes

M. A. Pimenta, A. Marucci, S. A. Empedocles, M. G. Bawendi, E. B. Hanlon, A. M. Rao, P. C. Eklund, R. E. Smalley, G. Dresselhaus, and M. S. Dresselhaus
Phys. Rev. B 58, R16016(R) – Published 15 December 1998
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Abstract

The anomalous resonant behavior of the tangential Raman modes of carbon nanotubes has been studied in the critical region of laser energies 1.7–2.2 eV. The special enhancement of the Raman modes is explained by a model that takes into account the transition between the singularities in the one-dimensional density of electronic states for the metallic nanotubes and the distribution of diameters in the sample. The results agree with direct measurements of the electronic density of states for the metallic nanotubes and establish their association with the specially enhanced high frequency, first-order Raman modes.

  • Received 22 September 1998

DOI:https://doi.org/10.1103/PhysRevB.58.R16016

©1998 American Physical Society

Authors & Affiliations

M. A. Pimenta* and A. Marucci

  • Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

S. A. Empedocles and M. G. Bawendi

  • Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

E. B. Hanlon

  • George R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

A. M. Rao and P. C. Eklund

  • Department of Physics and Astronomy, and Center for Applied Energy Research, University of Kentucky, Lexington, Kentucky 40506

R. E. Smalley

  • Department of Chemistry, Rice University, Houston, Texas 77005

G. Dresselhaus

  • Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

M. S. Dresselhaus

  • Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
  • Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

  • *Permanent address: Departamento de Fisica, Universidade Federal de Minas Gerais, Belo Horizonte, 30123-970 Brazil. Electronic address: mpimenta@fisica.ufmg.br

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Vol. 58, Iss. 24 — 15 December 1998

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