The LVV Auger line shape of sulfur on copper studied by Auger photoelectron coincidence spectroscopy (Articolo in rivista)

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  • The LVV Auger line shape of sulfur on copper studied by Auger photoelectron coincidence spectroscopy (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0953-8984/27/8/085003 (literal)
Alternative label
  • Di Filippo, G.; Trioni, M.I.; Fratesi, G.; Schumann, F.O.; Wei, Z.; Li, C.H.; Behnke, L.; Patil, S.; Kirschner, J.; Stefani, G. (2015)
    The LVV Auger line shape of sulfur on copper studied by Auger photoelectron coincidence spectroscopy
    in Journal of physics. Condensed matter (Print); IOP Publishing Ltd., Bristol BS1 6BE (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Di Filippo, G.; Trioni, M.I.; Fratesi, G.; Schumann, F.O.; Wei, Z.; Li, C.H.; Behnke, L.; Patil, S.; Kirschner, J.; Stefani, G. (literal)
Pagina inizio
  • 085003 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://stacks.iop.org/0953-8984/27/085003 (literal)
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  • 27 (literal)
Rivista
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  • 8 (literal)
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  • Scuola dottorale in Matematica e Fisica, Università di Roma Tre, via della Vasca Navale 84, I-00146 Rome, Italy [Di Filippo] CNR - National Research Council of Italy, ISTM, Via Golgi 19, I-20133 Milano, Italy [Trioni] ETSF, CNISM and Dipartimento di Scienza dei Materiali, Università degli Studi di Milano Bicocca, Via Cozzi 55, I-20125 Milano, Italy and Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, I-20133 Milano, Italy [Fratesi] Max-Planck-Institut fur Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany [Schumann, Wei, Li, Behnke, Patil, Kirshner] Institut fur Physik, Martin-Luther-Universitat Halle-Wittenberg, D-06099 Halle, Germany [Kirshner] Dipartimento di Scienze and CNISM, Universita` di Roma Tre, via della Vasca Navale 84, I-00146 Rome, Italy [Stefani] (literal)
Titolo
  • The LVV Auger line shape of sulfur on copper studied by Auger photoelectron coincidence spectroscopy (literal)
Abstract
  • We have studied the line shapes of Cu(0 0 1)-p(2 × 2)S L2 VV and L3 VV Auger decay by means of Auger photoelectron coincidence spectroscopy. Measuring the LVV Auger spectrum in coincidence with S 2p1/2 and 2p3/2 photoelectrons respectively, we have been able to separate the two overlapping Auger spectra and determine their intrinsic line shapes. The two Auger transitions, though shifted in energy, display an identical line shape whose main features can be qualitatively understood considering a single particle approximation but are better described within a Cini-Sawatzky (CS) approach. Comparison between the experimental and the CS calculated spectra confirms that a substantial part of the Auger lines (~20%) can be ascribed to decay events accompanied by the excitation of one additional electron-hole pair in the valence band. For the first time, the locality of the Auger process combined with the surface sensitivity of the APECS technique and its ability to separate overlapping structures are used to study Auger transitions taking place at the the surface states of a S/noble-metal interface. (literal)
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