Insulating surface layer on single crystal K
- J. Schiessling
- L. Kjeldgaard
- T. Käämbre
- I. Marenne
- L. Qian
- J. N. O'Shea
- J. Schnadt
- M. G. Garnier
- D. Nordlund
- M. Nagasono
- C. J. Glover
- J.-E. Rubensson
- N. Mårtensson
- P. Rudolf
- J. Nordgren
- P. A. Brühwiler
Publication date
November 2004
DOI Publisher
Springer Science and Business Media LLCAbstract
Using angle-dependent photoemission spectra of core and valence levels we show that metallic, single crystal $\mbox{K}_{3}\mbox{C}_{60}$is terminated by an insulating or weakly-conducting surface layer. We attribute this to the effects of strong intermolecular correlations combined with the average surface charge state. Several controversies on the electronic structure are thereby resolved
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