Bulk and surface charge states of K3C60

J Schiessling, L Kjeldgaard, T Kaambre, I Marenne, JN O'Shea, J Schnadt, Chris Glover, M Nagasono, D Nordlund, MG Garnier, L Qian, JE Rubensson, P Rudolf, Nils Mårtensson, J Nordgren, PA Bruhwiler

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review


We detect a significant angle-dependence in the core level and valence line shapes of photoelectron spectra of single crystal K3C60. This allows the identification of bulk and surface components in the data, and allows us to explain the anomalous line shapes observed for this system. The states near the Fermi level are associated with the bulk of the sample. There is strong evidence of an insulating surface layer, which we ascribe to intermolecular electron correlations. These results simplify the interpretation of previous, apparently conflicting observations.
TidskriftPhysical Review B (Condensed Matter and Materials Physics)
StatusPublished - 2005

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