Local-field effects on photoemission of C-60

Abstract

The surface core-level shift in C 1s soft x-ray photoemission spectroscopy has been experimentally observed in films of C-60 on Al. A value of 0.100+/-0.025 eV has been determined. Theoretical calculations are presented which show that the core hole is uniformly screened by the C-60 molecule, and that the effect of the surface upon this intramolecular screening should be negligible. The observed SCLS can therefore be accounted for by the difference in final state (core hole + polarized near-neighbor molecules) between bulk and near-surface atoms, as calculated by a straightforward, real-space, local-field calculation.

Published in

Physical review. B.
1996, volume: 54, number: 8, pages: R5279-R5282
Publisher: AMER PHYSICAL SOC

SLU Authors

• Enkvist, Christer

  • Uppsala University

UKÄ Subject classification

Theoretical Chemistry

Publication identifier

• DOI: https://doi.org/10.1103/PhysRevB.54.R5279

Permanent link to this page (URI)

https://res.slu.se/id/publ/129208