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Phys. Rev. B 80, 081402(R) (2009) [4 pages]

Fermi energy dependence of the G-band resonance Raman spectra of single-wall carbon nanotubes

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J. S. Park1, K. Sasaki2, R. Saito1, W. Izumida1, M. Kalbac3, H. Farhat4, G. Dresselhaus5, and M. S. Dresselhaus6,7
1Department of Physics, Tohoku University and CREST, Sendai 980-8578, Japan
2National Institute for Material Science, Tsukuba 305-0044, Japan
3J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, CZ-18223 Prague 8, Czech Republic
4Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
5Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
6Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
7Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA

Received 29 May 2009; published 4 August 2009

The Fermi energy dependence of the G-band resonance Raman spectra of single-wall carbon nanotubes (SWNTs) is calculated, including the Kohn anomaly effect for metallic tubes. The gate voltage dependence of the G-band Raman spectra for SWNTs shows chirality-dependent G+/G− spectra, reflecting their dependence on the eigenvector direction of the optical (LO and TO) phonon modes and the nanotube chirality.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.80.081402
DOI:
10.1103/PhysRevB.80.081402
PACS:
78.67.−n, 73.63.Fg
 
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