Electron-electron correlations in fullerene C-60 probed by incoherent scattering of x rays (Articolo in rivista)

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Label
  • Electron-electron correlations in fullerene C-60 probed by incoherent scattering of x rays (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Petrillo, C; Sacchetti, F; Orecchini, A; De Renzi, R; Ricco, M (2006)
    Electron-electron correlations in fullerene C-60 probed by incoherent scattering of x rays
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Petrillo, C; Sacchetti, F; Orecchini, A; De Renzi, R; Ricco, M (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 74 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy; CNR, INFM, CRS Soft, I-00137 Rome, Italy; Univ Parma, Dipartimento Fis, I-43100 Parma, Italy; CNISMA, I-43100 Parma, Italy (literal)
Titolo
  • Electron-electron correlations in fullerene C-60 probed by incoherent scattering of x rays (literal)
Abstract
  • The static structure factor of electrons in fullerene has been obtained by a properly designed x-ray diffraction experiment. Due to the intense diffuse scattering caused by the orientational disorder of the C-60 molecules in fullerene, the experiment presented several difficulties. Nonetheless, the data were accurate enough to provide an estimate of the exchange-correlation energy and to make a valuable comparison of the static structure factors of fullerene and diamond. The observed value of the exchange-correlation energy, which is larger in fullerene than in diamond, suggests a clear link between carbon polymorphism and dynamic electron correlations. The experimental data of static structure factor of fullerene, together with the derived exchange-correlation contribution to the cohesion and the pair-correlation function, offer an interesting test on the validity of the local-density treatment of the electron correlations in solids. (literal)
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