Computational characterization of the HOMO-2 photoemission intensity oscillations in C-60

Date

2011-11-18

Author

Toffolı, Danıele
Stener, Mauro
Fronzoni, Giovanna
Decleva, Piero

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We have calculated the photoionization cross section of the HOMO, HOMO-1 and HOMO-2 photoemission bands of C-60 from threshold up to 250 eV of photon energy. The calculated HOMO-2/HOMO-1 intensity ratio is in excellent agreement with recent experimental data. The computational method uses a multicentric expansion of the scattering wave function and a density functional theory (DFT) Hamiltonian. Time dependent DFT calculations suggest that the oscillatory phenomenon is essentially of single particle nature. An interpretation of the experimental findings in terms of the sigma-pi symmetries of the ionized orbitals is provided.

Subject Keywords

PHOTOIONIZATION CROSS-SECTIONS, VALENCE, C-70, CONTINUUM, FILM

URI

https://hdl.handle.net/11511/57409

Collections

Department of Chemistry, Article