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Pseudopotential And Surface Effects On The Electronic Shell Structure Of Trivalent-Metal Clusters

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  • J. LERMÉ

    (Laboratoire de Spectrométrie Ionique et Moléculaire (URA CNRS n0 171), Université Lyon I, Bâtiment 205, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France)

  • M. PELLARIN

    (Laboratoire de Spectrométrie Ionique et Moléculaire (URA CNRS n0 171), Université Lyon I, Bâtiment 205, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France)

  • B. BAGUENARD

    (Laboratoire de Spectrométrie Ionique et Moléculaire (URA CNRS n0 171), Université Lyon I, Bâtiment 205, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France)

  • C. BORDAS

    (Laboratoire de Spectrométrie Ionique et Moléculaire (URA CNRS n0 171), Université Lyon I, Bâtiment 205, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France)

  • E. COTTANCIN

    (Laboratoire de Spectrométrie Ionique et Moléculaire (URA CNRS n0 171), Université Lyon I, Bâtiment 205, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France)

  • J.L. VIALLE

    (Laboratoire de Spectrométrie Ionique et Moléculaire (URA CNRS n0 171), Université Lyon I, Bâtiment 205, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France)

  • M. BROYER

    (Laboratoire de Spectrométrie Ionique et Moléculaire (URA CNRS n0 171), Université Lyon I, Bâtiment 205, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France)

Abstract

Electronic shell and supershell structures in trivalent-metal clusters exhibit large discrepancies with the results of the conventional jellium model. For gallium the beat location in the supershell pattern is found aroundNe=2500valence electrons, in disagreement with the jellium model predictionNe=1150. The discrepancies can be explained by a slight softness increase of the effective electronic potential at the surface. Theoretical calculations, taking into account ion pseudopotentials, within both local and nonlocal approaches, show that this softness arises to a large extent from the non-Coulombic short-range electron-ion interaction.

Suggested Citation

  • J. Lermé & M. Pellarin & B. Baguenard & C. Bordas & E. Cottancin & J.L. Vialle & M. Broyer, 1996. "Pseudopotential And Surface Effects On The Electronic Shell Structure Of Trivalent-Metal Clusters," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 3(01), pages 217-221.
    • Handle: RePEc:wsi:srlxxx:v:03:y:1996:i:01:n:s0218625x96000437
    DOI: 10.1142/S0218625X96000437
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