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Final-state interference effects in valence band photoemission of (C₅₉N)₂

Hunt, M.R.C.; Pichler, T.; Šiller, L.; Brühwiler, P.A.; Golden, M.S.; Tagmatarchis, N.; Prassides, K.; Rudolf, P.

Final-state interference effects in valence band photoemission of (C₅₉N)₂ Thumbnail


Authors

T. Pichler

L. Šiller

P.A. Brühwiler

M.S. Golden

N. Tagmatarchis

K. Prassides

P. Rudolf



Abstract

Oscillatory behavior of photoemission intensity with incident photon energy has been observed for several fullerenes and fullerene derivatives. However, until now it has been unclear if these effects arise from interference associated with the spatial distribution of the initial state within the molecule or are due to scattering of the outgoing photoelectron. In order to resolve this issue we performed synchrotron radiation excited valence band photoemission measurements on multilayer (C59N)2 films. The highest occupied molecular orbital (HOMO) of the (C59N)2 dimer is spatially localized, while each half of the dimer remains approximately spherical. Careful normalization and fitting of the measured spectra clearly show that the intensity of the HOMO also displays a periodic variation of intensity with photon energy indicating that scattering of the photoemitted electron and consequent interference effects lead to the observed intensity changes.

Citation

Hunt, M., Pichler, T., Šiller, L., Brühwiler, P., Golden, M., Tagmatarchis, N., …Rudolf, P. (2002). Final-state interference effects in valence band photoemission of (C₅₉N)₂. Physical review B, 66(19), https://doi.org/10.1103/physrevb.66.193404

Journal Article Type Article
Publication Date 2002-11
Deposit Date Jan 9, 2009
Publicly Available Date Sep 15, 2010
Journal Physical Review B
Print ISSN 1098-0121
Electronic ISSN 1550-235X
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 66
Issue 19
DOI https://doi.org/10.1103/physrevb.66.193404
Keywords Photoionization Cross-sections, Heterofullerene C59Nn, Electronic-structure, Oscillations, Spectroscopy, C-60, Azafullerene.

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Copyright Statement
© 2002 by The American Physical Society. All rights reserved.






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