ON THE COULOMB INTERACTION IN CARBON ONIONS AND THEIR ABSORPTION SPECTRA

D. Östling, A. Rosén, S.P. Apell and G. Mukhopadhyay
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D. Östling: Department of Physics, Chalmers University of Technology and Göteborg University, S-412 96 Göteborg, Sweden
A. Rosén: Department of Physics, Chalmers University of Technology and Göteborg University, S-412 96 Göteborg, Sweden
S.P. Apell: Department of Engineering Sciences, University of Borås, S-501 15 Borås, Sweden
G. Mukhopadhyay: Department of Physics, Indian Institute of Technology, Bombay-400 076, India

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 843-847

Abstract: We have previously demonstrated the existence of a rich spectrum of collective resonances for both carbon tubes and carbon onions using a classical electrodynamic model. Collective resonances in these systems are predicted to dominate their respective UV spectra. In this study we present results which demonstrate how the coupling between the shells via the Coulomb interaction completely determines the absorption cross section. The outermost shells are strongly screened for low frequencies and frequencies close to the effective plasma frequency of the shells.

Date: 1996
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DOI: 10.1142/S0218625X96001510

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