Electronic properties of a pure and sodium-doped C-70 single layer adsorbed on Al polycrystalline surface (Articolo in rivista)

Type
Label
  • Electronic properties of a pure and sodium-doped C-70 single layer adsorbed on Al polycrystalline surface (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Pardini T. 1, Cepek C 3., Larciprete R. 4, Sangaletti L. 5,6, Pagliara S. 5,6, Gotter R. 3, Floreano L. 3, Verdini A. 3, Morgante A. 1,3, Parmigiani F. 5,6, Goldoni A. 2 (2005)
    Electronic properties of a pure and sodium-doped C-70 single layer adsorbed on Al polycrystalline surface
    in The Journal of chemical physics
    (literal)
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  • Pardini T. 1, Cepek C 3., Larciprete R. 4, Sangaletti L. 5,6, Pagliara S. 5,6, Gotter R. 3, Floreano L. 3, Verdini A. 3, Morgante A. 1,3, Parmigiani F. 5,6, Goldoni A. 2 (literal)
Pagina inizio
  • 054704 (literal)
Pagina fine
  • 7 (literal)
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  • 122 (literal)
Rivista
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  • fasc. (5). American Institute of Physics (AIP). (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • 1. Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy 2. Sincrotrone Trieste SCpA, I-34012 Trieste, Italy 3. INFM, Lab TASC, I-34012 Trieste, Italy 4. CNR, IMIP, I-85050 Tito, PZ, Italy 5. INFM, I-25121 Brescia, Italy 6. Univ Cattolica Sacro Cuore, I-25121 Brescia, Italy (literal)
Titolo
  • Electronic properties of a pure and sodium-doped C-70 single layer adsorbed on Al polycrystalline surface (literal)
Abstract
  • Core level and valence band photoemission measurements combined with near edge x-ray absorption fine structure measurements were performed on a single C70 layer adsorbed on polycrystalline Al (1 ML-C70/Al) (ML—monolayer), pure and doped with sodium atoms. The data obtained from the pure ML chemisorbed on Al surface show a semiconducting behavior of the system, which is characterized by a covalent bond between the adsorbate and the substrate. The same data show also that the C70 molecules tend to orient themselves with the C5v axis perpendicular to the surface in analogy to what observed for 1 ML-C70/Cu(111). By doping the sample with sodium atoms a charge transfer from the alkali atoms to the lowest unoccupied molecular orbital (LUMO) of the C70 molecules takes place, as underlined by the gradual increasing intensity of the C70 LUMO peak as a function of doping. Nevertheless, no metallic phases are observed for any doping step (literal)
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