Effect of van der Waals Interactions on the Raman Modes in Single Walled Carbon Nanotubes
A.M. Rao, J. Chen, E. Richter, U. Schlecht, P.C. Eklund, R.C. Haddon, U.D. Venkateswaran, Y.-K. Kwon, and D. Tomanek, Phys. Rev. Lett. 86 (17), 3895-3898 (2001).
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