Evidence for Incomplete Charge Transfer and La-derived States in the Valence Bands of Endohedrally doped La@C82
PRL : Physical Review Letters. Bd. 79. College Park, MD: APS 1997 S. 2289 - 2292
Erscheinungsjahr: 1997
ISBN/ISSN: 1079-7114
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1103/PhysRevLett.79.2289
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Inhaltszusammenfassung
Photoelectron spectra from sublimed layers of chromatographically separated La@C82 are presented. Using photon energies corresponding to the La 3d to 4f transition, a resonant enhancement of the La-derived valence states is observed. From the calculated resonant intensities of La 5d and 5p states in a La atom we estimate that about 1/3 of an electron charge is left in the La-valence orbitals for La@C82. In contrast to previous interpretations of La core-level photoemission studies our results...Photoelectron spectra from sublimed layers of chromatographically separated La@C82 are presented. Using photon energies corresponding to the La 3d to 4f transition, a resonant enhancement of the La-derived valence states is observed. From the calculated resonant intensities of La 5d and 5p states in a La atom we estimate that about 1/3 of an electron charge is left in the La-valence orbitals for La@C82. In contrast to previous interpretations of La core-level photoemission studies our results demonstrate that the La valence electrons are not completely delocalized on the fullerene cage.» weiterlesen» einklappen
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Physik
