G(-) and G(+) in the Raman spectrum of isolated nanotube: a study on resonance conditions and lineshape
Telg H, Fouquet M, Maultzsch J, Wu Y, Chandra B, Hone J, Heinz TF, Thomsen C (2008)
Publication Status: Published
Publication Type: Journal article
Publication year: 2008
Journal
Publisher: WILEY-V C H VERLAG GMBH
Book Volume: 245
Pages Range: 2189-2192
Journal Issue: 10
Abstract
We analyze the high-energy Raman modes, G(+) and G(-), in a pair of one metallic and one semiconducting nanotube grown across a 100 m wide slit. By combining Raman resonance profiles of the radial breathing mode and the high-energy modes, we assign the broad G(-) peak to a metallic and the G(+) peak to a semiconducting nanotube. Considering theoretical predictions we show that both peaks, G(-) and G(+), originate from the LO phonon. The G(-) peak is the longitudinal mode of the metallic tube; it is broadened and downshifted due to strong electron-phonon coupling in the metallic nanotube. The GO peak is due to the longitudinal mode in the semiconducting tube. An asymmetric lineshape of the G(-) peak agrees with observations of the asymmetry to be an intrinsic feature of metallic nanotubes. (C) 2008 WILEY-VCH Veriag GmbH & Co. KGaA, Weinheim
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United States (USA) (US)How to cite
APA:
Telg, H., Fouquet, M., Maultzsch, J., Wu, Y., Chandra, B., Hone, J.,... Thomsen, C. (2008). G(-) and G(+) in the Raman spectrum of isolated nanotube: a study on resonance conditions and lineshape. physica status solidi (b), 245(10), 2189-2192. https://dx.doi.org/10.1002/pssb.200879658
MLA:
Telg, Hagen, et al. "G(-) and G(+) in the Raman spectrum of isolated nanotube: a study on resonance conditions and lineshape." physica status solidi (b) 245.10 (2008): 2189-2192.
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