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Static electric dipole polarizabilities of alkali clusters

  • D. Rayane
  • A. R. Allouche
  • E. Benichou
  • R. Antoine
  • M. Aubert-Frecon
  • Ph. Dugourd
  • M. Broyer
  • C. Ristori
  • F. Chandezon
  • B. A. Huber
  • C. Guet
Conference paper

Abstract

We have measured the static dipole polarizability of lithium and sodium clusters (n = 1 − 22). Values measured for sodium are in agreement with previous experiments. While the polarizability per atom for sodium clusters decreases slowly as a function of the cluster size, a sharp decrease between sizes 1 and 4 is observed for lithium clusters. Experimental values are compared to Density Functional Theory (DFT/PW91) calculations. The size evolutions for sodium and lithium cluster polarizabilities are well reproduced by our calculations. The sharp decrease observed for small lithium clusters is discussed in terms of electronic density.

PACS

36.40.−c Atomic and molecular clusters 32.10.Dk Electric and magnetic moments, polarizability 31.15.Ew Density functional theory 

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Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  • D. Rayane
    • 1
  • A. R. Allouche
    • 1
  • E. Benichou
    • 1
  • R. Antoine
    • 1
  • M. Aubert-Frecon
    • 1
  • Ph. Dugourd
    • 1
  • M. Broyer
    • 1
  • C. Ristori
    • 2
  • F. Chandezon
    • 2
  • B. A. Huber
    • 2
  • C. Guet
    • 2
  1. 1.Laboratoire de Spectrométrie Ionique et Moléculaire, UMR 5579CNRS and Université Lyon 1Villeurbanne CedexFrance
  2. 2.Département de Recherche Fondamentale sur la Matière CondenséeService des Ions, des Atomes et des Agrégats, CEA GrenobleGrenoble Cedex 9France

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