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Anomalously high raman scattering cross section for carbon-carbon vibrations in trans-nanopolyacetylene

D. Yu. Parashchuk^a, I. V. Golovnin^a, A. G. Smekhova^a, V. M. Kobryanskii<sup>b

a</sup> M. V. Lomonosov Moscow State University, Faculty of Physics
^b N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow

Abstract: Absolute Raman scattering cross section on the stretching carbon-carbon vibrational modes of trans-nanopolyacetylene (NPA) was measured at an excitation wavelength of 514 nm. It is shown that the carbon-carbon bonds in trans-NPA scatter light more efficiently than in the diamond structure by several orders of magnitude. The role of resonant Raman scattering and the model of coherent vibrations of carbon-carbon bonds are discussed.

PACS: 33.20.Fb, 42.70.Jk, 78.30.Jw

Received: 03.10.2002

 English version: Journal of Experimental and Theoretical Physics Letters, 2002, 76:9, 572–574

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