Anomalous two-peak G-band Raman effect in one isolated single-wall carbon nanotube

A. G. Souza Filho, A. Jorio, A. K. Swan, M. S. Ünlü, B. B. Goldberg, R. Saito, J. H. Hafner, C. M. Lieber, M. A. Pimenta, G. Dresselhaus, and M. S. Dresselhaus
Phys. Rev. B 65, 085417 – Published 8 February 2002
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Abstract

The resonant second-order G-band Raman spectra of isolated single-wall carbon nanotubes (SWNTs) exhibit an interesting resonance phenomenon, whereby the G band for some special (n,m) isolated SWNTs exhibits a two-peak structure, while for most SWNTs, the G-band profile is a single Lorentzian peak. The two-peak phenomenon is explained by combining the double-resonance Raman effect, originally introduced for graphite, with the singular electronic structure of SWNTs, which is unique for a given (n,m) pair. Therefore, the G-band profile is strongly dependent on the joint density of electronic states and provides useful information about the electronic structure and on the (n,m) assignment for the specific SWNT that is in resonance with the laser.

  • Received 23 May 2001

DOI:https://doi.org/10.1103/PhysRevB.65.085417

©2002 American Physical Society

Authors & Affiliations

A. G. Souza Filho1,2, A. Jorio1,3, A. K. Swan4, M. S. Ünlü4, B. B. Goldberg4, R. Saito5, J. H. Hafner6, C. M. Lieber6, M. A. Pimenta3, G. Dresselhaus7, and M. S. Dresselhaus1,8

  • 1Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307
  • 2Departamento de Física, Universidade Federal do Ceará, Fortaleza-CE 60455-760, Brazil
  • 3Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte-MG, 30123-970 Brazil
  • 4Electrical and Computer Engineering Department, and Department of Physics, Boston University, Boston, Massachusetts 02215
  • 5Department of Electronic-Engineering, University of Electro-Communications, Tokyo 182-8585, Japan
  • 6Department of Chemistry, Harvard University, Cambridge, Massachusetts 02138
  • 7Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307
  • 8Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307

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Issue

Vol. 65, Iss. 8 — 15 February 2002

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