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  • 1
    Digitale Medien
    Digitale Medien
    Core edge energy loss studies of Pd clusters on graphite (1989)
    Springer
    The European physical journal 12 (1989), S. 417-420 
    Details
    ISSN: 1434-6079
    Schlagwort(e): 79.20 ; 73.20
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract In order to verify that the d-band of Pd clusters moves towards higher binding energies when the cluster size decreases, we have carried out energy loss measurements of the M4,5 core edge of Pd clusters with different diameters evaporated on polycristalline graphite. Generally the shifts have been attributed in the past both to initial and or final state effects. In the last case one could not observe variations with our technique which probes the partial unfilled density of states. Our experimental results show an enhancement of the absorption and a narrowing of the lineshape with increasing cluster size. We attribute the observed effects to a genuine change in the electronic structure which occurs in the initial state of the cluster. Comparative studies of this effect have been performed following the evolution of the M4,5 VV Auger levels and the collective excitations in the range 0–30 eV far from the elastic peak.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01426986
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  • 2
    Digitale Medien
    Digitale Medien
    Electronic structure of Cr clusters on graphite (1991)
    Springer
    The European physical journal 20 (1991), S. 387-390 
    Details
    ISSN: 1434-6079
    Schlagwort(e): 79.20 ; 73.20 ; 36.40
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The electronic structure of small chromium clusters deposited by evaporation onto clean polycrystalline graphite has been studied by means of Auger, X-ray Photoemission (XPS) and Electron Energy Loss (EELS) spectroscopies. The XPS results show an increase in the binding energy of both core levels and valence band reducing the cluster size. The EELS measurements show a variation of the intensity ratio of L3-to-L2 ionization core edges. We interpret this change as due to different redistribution, within the clusterd-band, of the empty states above the Fermi level. As a consequence the XPS results may also be attributed to sizeable change of the electronic structure of the small clusters.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01544018
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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