Giant excitonic exchange splitting in Si nanowires: First-principles calculations (Articolo in rivista)

Type
Label
  • Giant excitonic exchange splitting in Si nanowires: First-principles calculations (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.81.121303 (literal)
Alternative label
  • Palummo M., F. Iori, R. Del Sole, and S.Ossicini (2010)
    Giant excitonic exchange splitting in Si nanowires: First-principles calculations
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Palummo M., F. Iori, R. Del Sole, and S.Ossicini (literal)
Pagina inizio
  • 121303(R1) (literal)
Pagina fine
  • 121303(R4) (literal)
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  • 81 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 12 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. ETSF, I-00133 Rome, Italy 2. Univ Roma Tor Vergata, Dipartimento Fis, CNR, INFM,SMC, I-00133 Rome, Italy 3. Ecole Polytech, Solides Irradies Lab, F-91128 Palaiseau, France 4. Univ Modena & Reggio Emilia, Dipartimento Sci & Metodi Ingn, CNR INFM S3, I-42100 Reggio Emilia, Italy (literal)
Titolo
  • Giant excitonic exchange splitting in Si nanowires: First-principles calculations (literal)
Abstract
  • The size and doping dependence of the electron-hole exchange interaction in Si nanowires is investigated from first principles. In pure Si nanowires we found excitonic exchange splittings in very good agreement with the experimental results for porous silicon. For n-doped Si nanowires a giant singlet-triplet splitting, three order of magnitude bigger than in bulk silicon, is predicted as due to the dramatic enhancement of the electron and the hole probability of being in the same place at the same time. (literal)
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