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Similarities of the RBM and D Raman bands in double wall carbon nanotubes

Puech, Pascal and Bassil, Ayman and Gonzales, Jesús and Power, Chrystian and Flahaut, Emmanuel and Barrau, Sophie and Demont, Philippe and Lacabanne, Colette and Perez, Emile and Bacsa, Wolfgang Similarities of the RBM and D Raman bands in double wall carbon nanotubes. (2005) Physical review B. Condensed matter and materials physics, vol. 7 . ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.72.155436

Abstract

We have examined several sets of heterogeneous double wall carbon nanotubes and analysed the frequency in a wide range of values. We have found that a statistical correlation exists between the D band intensity and the RBMs intensity. All the sample sets show a correlation of the RBM and D Raman intensity which is monotonic and non-linear using the 514nm laser excitation. Our results suggest that a similar mechanism is at the origin of the RBM and D bands. These results are corroborated by observations on carbon nanotubes embedded in a polymer matrix. We derive the phonon potential deformation for the D band and extend the excitation wavelength dependence of the D band to the UV. The intensity of the D band decreases with increasing hydrostatic pressure and fanishes at a pressure comparable to what has been observed earlier for the RBM and D* band.

Item Type:Article
Additional Information:©2005 The American Physical Society Thanks to American Physical Society editor. The definitive version is available at http://publish.aps.org. The original PDF of the article can be found at Physical review B website
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Universidad de Los Andes (VENEZUELA)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By:Thomas Bonnecarere

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