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The European Physical Journal D

, Volume 50, Issue 2, pp 165–169 | Cite as

The valence band of free K clusters studied by photoelectron and Auger spectroscopies

  • A. RossoEmail author
  • G. Öhrwall
  • S. E. Canton
  • S. Legendre
  • I. L. Bradeanu
  • S. Svensson
  • O. Björneholm
  • M. Tchaplyguine
Clusters and Nanostructures

Abstract

The valence states of free neutral potassium clusters produced by a gas aggregation source were probed by synchrotron radiation based photoelectron spectroscopy. The first ionization energy (IE) of the clusters was determined to be 10% larger than the work function of bulk potassium. Using electrostatic concepts and the IE, the mean size of the clusters was estimated to be ≈2000 atoms. Further information about the valence band was provided by investigation of the Auger process initiated by the ionization of the 3p level with a subsequent emission of an Auger electron from the valence band (M2,3VV). Plasmon satellites were observed in Auger spectra of free metal clusters.

PACS

36.40.-c Atomic and molecular clusters 73.22.-f Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals 79.60.-i Photoemission and photoelectron spectra 

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Copyright information

© Springer 2008

Authors and Affiliations

  • A. Rosso
    • 1
    • 2
    Email author
  • G. Öhrwall
    • 1
    • 2
  • S. E. Canton
    • 3
  • S. Legendre
    • 2
  • I. L. Bradeanu
    • 2
  • S. Svensson
    • 2
  • O. Björneholm
    • 2
  • M. Tchaplyguine
    • 1
  1. 1.MAX-lab, Lund UniversityLundSweden
  2. 2.Department of Physics and Material ScienceUppsala UniversityUppsalaSweden
  3. 3.Department of Chemical PhysicsLund UniversityLundSweden

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