Zeitschrift für Physik B Condensed Matter

, Volume 92, Issue 3, pp 347–351 | Cite as

Resonant photoemission study ofK-derived valence-band states in K X C60

  • S. L. Molodtsov
  • A. Gutiérrez
  • E. Navas
  • M. Domke
  • G. Kaindl
  • M. Merkel
  • N. Nücker
  • J. Fink
  • V. P. Antropov
  • O. K. Andersen
  • O. Jepsen
Original Contributions
Received:
Revised:

Abstract

The electronic structure of K-doped C60 was investigated by photoemission (PE) and X-ray absorption near-edge structure (XANES) studies at the C-1s and K-2p thresholds. In addition, information on the local K-derived partial density of states in superconducting K3C60 was obtained by resonant PE at the K-2p1/2 threshold. The experimental observations support a complete charge transfer from K to C60 and we clearly observe a finite density of states atE F . From resonant PE, occupied states with K-p, d character could be identified in the binding-energy region from 1.5 to 8 eV below, but not directly at the Fermi level. This partial-density-of-states structure agrees well with the results of our band-structure calculations based on the local-density approximation.

PACS

36.40.+d 74.75.+t 79.60.−i 
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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • S. L. Molodtsov
    • 1
  • A. Gutiérrez
    • 1
  • E. Navas
    • 1
  • M. Domke
    • 1
  • G. Kaindl
    • 1
  • M. Merkel
    • 2
  • N. Nücker
    • 2
  • J. Fink
    • 2
  • V. P. Antropov
    • 3
  • O. K. Andersen
    • 3
  • O. Jepsen
    • 3
  1. 1.Institut für ExperimentalphysikFreie Universität BerlinBerlinGermany
  2. 2.Institut für Nukleare FestkörperphysikKernforschungszentrum KarlsruheKarlsruheGermany
  3. 3.Max-Planck-Institut für FestkörperforschungStuttgartGermany

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