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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 11 (2000), S. 239-245 
    ISSN: 1434-6079
    Keywords: PACS. 36.40.-c Atomic and molecular clusters - 31.15.Ew Density-functional theory - 33.15.Kr Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The static electric dipole polarizability of Na N clusters with even N has been calculated in a collective, axially averaged and a three-dimensional, finite-field approach for , including the ionic structure of the clusters. The validity of a collective model for the static response of small systems is demonstrated. Our density functional calculations verify the trends and fine structure seen in a recent experiment. A pseudopotential that reproduces the experimental bulk bond length and atomic energy levels leads to a substantial increase in the calculated polarizabilities, in better agreement with experiment. We relate remaining differences in the magnitude of the theoretical and experimental polarizabilities to the finite temperature present in the experiments.
    Type of Medium: Electronic Resource
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