Interaction of silicene with beta-Si3N4(0001)/Si(111) substrate; energetics and electronic properties (Articolo in rivista)

Type
Label
  • Interaction of silicene with beta-Si3N4(0001)/Si(111) substrate; energetics and electronic properties (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0953-8984/26/39/395009 (literal)
Alternative label
  • Francesco Filippone (2014)
    Interaction of silicene with beta-Si3N4(0001)/Si(111) substrate; energetics and electronic properties
    in Journal of physics. Condensed matter (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Francesco Filippone (literal)
Pagina inizio
  • 395009 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 26 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 39 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR--Istituto di Struttura della Materia, via Salaria km 29,300, I-00016 Monterotondo, Roma, Italy (literal)
Titolo
  • Interaction of silicene with beta-Si3N4(0001)/Si(111) substrate; energetics and electronic properties (literal)
Abstract
  • The free-standing, quasi-2D layer of Si is known as silicene, in analogy with graphene. Much effort is devoted in the study of silicene, since, similarly to graphene, it shows a very high electron mobility. The interaction of silicene with a hybrid substrate, ?-Si3N4(0001)/Si(111), exposing the ?-Si3N4(0001) surface, has been studied by means of Density Functional calculations, with van der Waals interactions included. Once deepened the most important structural and electronic features of the hybrid substrate, we demonstrated that an electron transfer occurs from the substrate to the silicene layer. In turn, such an electron transfer can be modulated by the doping of the substrate. The ?-Si3N4/silicene interaction appears to be strong enough to ensure adequate adsorption stability. It is also shown that electronic states of substrate and adsorbate still remain decoupled, paving the way for the exploitation of the peculiar electron mobility properties of the silicene layer. A detailed analysis in both direct and reciprocal space is reported. (literal)
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