Interplay of the volume and surface plasmons in the electron energy loss spectra of C$_{60}$

Details Interplay of the volume and surface plasmons in the electron energy loss spectra of C$_{60}$ Interplay of the volume and surface plasmons in the electron energy loss spectra of C$_{60}$

2012-02-29

arxiv.org/abs/1202.6496v1

Physics

Atomic and Molecular Clusters

5 pages, 3 figures

Scientific paper

The results of a joint experimental and theoretical investigation of the C$_{60}$ collective excitations in the process of inelastic scattering of electrons are presented. The shape of the electron energy loss spectrum is observed to vary when the scattering angle increases. This variation arising due to the electron diffraction of the fullerene shell is described by a new theoretical model which treats the fullerene as a spherical shell of a finite width and accounts for the two modes of the surface plasmon and for the volume plasmon as well. It is shown that at small angles, the inelastic scattering cross section is determined mostly by the symmetric mode of the surface plasmon, while at larger angles, the contributions of the antisymmetric surface plasmon and the volume plasmon become prominent.

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