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Size-selected Agn and Cun clusters supported on MgO(100) films

  • M.-H. SchaffnerEmail author
  • F. Patthey
  • W.-D. Schneider
Conference paper

Abstract

Small Ag n (n ≤ 13) and Cu n (n ≤ 7) clusters, generated by sputtering with a new ultrahigh vacuum (UHV)-compatible Xe-ion gun and size-selected by a quadrupole mass spectrometer, are deposited in situ in submonolayer quantities on a magnesium oxide film supported on a molybdenum single crystal. At low substrate temperature (T = 45 K), the measured electron energy loss spectra display characteristic losses within the MgO band gap. These novel results are discussed in terms of electronic transitions and plasmon excitations within the cluster.

PACS

36.40.+d Atomic and molecular clusters 79.20.Hx Electron impact: secondary emission 

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Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  1. 1.Institut de physique de la matière condenséeUniversité de LausanneLausanneSwitzerland

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