Experimental Investigation of the Electronic Structure of Gas-Phase and Solid C60
We have investigated the electronic structure and electron correlation effects of gas phase and solid C60 by C Is photoabsorption, photoelectron, and Auger spectroscopies. Direct in situ comparison between C Is absorption spectra taken in the gas phase and in the solid reveals a close similarity between the unoccupied levels of the two phases. The same is true for the shake up satellites in the C Is XPS spectrum. The satellite due to plasmon excitations, on the other hand, appears at about 6 eV higher binding energy in the gas phase than in the solid, due to the contribution of higher multipole moments. Solid state effects play only a minor role in this new material, and electron correlation effects are predominantly intra molecular.
KeywordsAuger Spectrum Plasmon Excitation Electron Detachment Electron Correlation Effect Electron Energy Loss Spectrum
Unable to display preview. Download preview PDF.
- S. Krummacher, M. Biermann, M. Neeb, A. Liebsch, and W. Eberhardt, Submitted to Phys. Rev. B.Google Scholar