Linewidth of the Raman features of individual single-wall carbon nanotubes

A. Jorio, C. Fantini, M. S. S. Dantas, M. A. Pimenta, A. G. Souza Filho, Ge. G. Samsonidze, V. W. Brar, G. Dresselhaus, M. S. Dresselhaus, A. K. Swan, M. S. Ünlü, B. B. Goldberg, and R. Saito
Phys. Rev. B 66, 115411 – Published 23 September 2002
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Abstract

In this work we analyze the room-temperature linewidth for several Raman features (i.e., the radial breathing mode, the G band, the D band, and the G band) observed for individual isolated single-wall carbon nanotubes (SWNTs). Temperature-dependent measurements on SWNT bundles and isolated SWNTs show that anharmonic effects are not important for linewidth broadening at room temperature. Measurements on a large number of samples (170 isolated SWNTs) allow us to filter out the effect from extrinsic SWNT properties (e.g., defects, tube deformations, substrate roughness) and to obtain information about intrinsic properties related to phonon and electron dispersion relations, curvature and Breit-Wigner-Fano effects, single- vs double-resonance Raman scattering processes, and the resonance condition itself through a linewidth analysis. We also use observations at the single-nanotube level to understand linewidth effects in SWNT bundles.

  • Received 30 January 2002

DOI:https://doi.org/10.1103/PhysRevB.66.115411

©2002 American Physical Society

Authors & Affiliations

A. Jorio1,2, C. Fantini1, M. S. S. Dantas1, M. A. Pimenta1, A. G. Souza Filho3,6, Ge. G. Samsonidze4, V. W. Brar3, G. Dresselhaus5, M. S. Dresselhaus3,4, A. K. Swan7, M. S. Ünlü7, B. B. Goldberg7,8, and R. Saito9

  • 1Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 30123-970 Brazil
  • 2Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307
  • 3Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307
  • 4Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307
  • 5Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307
  • 6Departamento de Física, Universidade Federal do Ceará, Fortaleza–CE, 60455-760 Brazil
  • 7Electrical and Computer Engineering Department, Boston University, Boston, Massachusetts 02215
  • 8Department of Physics, Boston University, Boston, Massachusetts 02215
  • 9Department of Electronic-Engineering, University of Electro-Communications, Tokyo, 182-8585 Japan

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Vol. 66, Iss. 11 — 15 September 2002

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