Spin Polarized Metastable Helium De-excitation Processes on Metal Surfaces (Articolo in rivista)

Type
Label
  • Spin Polarized Metastable Helium De-excitation Processes on Metal Surfaces (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp2005875 (literal)
Alternative label
  • Achilli, S.; Brivio, G.P.; Fratesi, G.; Trioni, M.I. (2011)
    Spin Polarized Metastable Helium De-excitation Processes on Metal Surfaces
    in The journal of physical chemistry. A; ACS, American chemical society, Washington, DC (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Achilli, S.; Brivio, G.P.; Fratesi, G.; Trioni, M.I. (literal)
Pagina inizio
  • 8498 (literal)
Pagina fine
  • 8503 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://pubs.acs.org/doi/abs/10.1021/jp2005875 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 115 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • http://pubs.acs.org/doi/abs/10.1021/jp2005875 DOI: 10.1021/jp2005875 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 30 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ETSF and Dipartimento di Scienza dei Materiali, Universit?à di Milano-Bicocca, Via Cozzi 53, I-20125 Milano, Italy [Achilli, Brivio, Fratesi] CNR - National Research Council of Italy, ISTM, Via Golgi 19, 20133 Milano, Italy [Trioni] (literal)
Titolo
  • Spin Polarized Metastable Helium De-excitation Processes on Metal Surfaces (literal)
Abstract
  • Spin polarized de-excitation of a metastable helium atom interacting with metal surfaces is treated within density functional theory. The method is based on a self-consistent calculation of the spin dependent electronic properties of the system, such as the surface density of states and the localized surface states, to compute the transition rate. On the high work function Ag(100) and Ag(111) surfaces, the helium 2s electron is delocalized in the metal and hence the transition rate is weakly spin dependent. The existence of a Shockley surface state in Ag(111) determines a neutralization rate that is about 59% larger than that from Ag(100). On a low work function metal, namely Na(100), the rate is of smaller magnitude than those on silver because the 2s triplet resonance is found to be more occupied. Consequently, emitted electrons can display a strong spin dependence also for a paramagnetic surface. (literal)
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