Coherent electron-lattice vibrations in trans-nanopolyacetylene probed by Raman scattering - art. no. 207402

Authors
Paraschuk, DY Kobryanskii, VM
Citation
Dy. Paraschuk et Vm. Kobryanskii, Coherent electron-lattice vibrations in trans-nanopolyacetylene probed by Raman scattering - art. no. 207402, PHYS REV L, 8720(20), 2001, pp. 7402
Citations number
29
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
8720
Issue
20
Year of publication
2001
Database
ISI
SICI code
0031-9007(20011112)8720:20<7402:CEVITP>2.0.ZU;2-V
Abstract
Unexpectedly high Raman scattering activity of carbon-carbon bond length vi brations was found in polyacetylene nanoparticles. For exciting photon ener gy in the transparency range of nanopolyacetylene we observed extremely hig h Raman scattering cross section and high intensity ratio of anti-Stokes to Stokes bands. Furthermore, the Raman activity in trans-nanopolyacetylene i s characterized by intensive overtones and combinations. We present a quali tative nonlinear model of coherent weakly damped electron-lattice vibration s in ordered trans-polyacetylene chains.