Electronic conductance of one-dimensional chains with phonon dephasing disorder (Articolo in rivista)

Type
Label
  • Electronic conductance of one-dimensional chains with phonon dephasing disorder (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Cresti, A; Grosso, G; Parravicini, GP (2006)
    Electronic conductance of one-dimensional chains with phonon dephasing disorder
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cresti, A; Grosso, G; Parravicini, GP (literal)
Pagina inizio
  • 10059 (literal)
Pagina fine
  • 10073 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 18 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, INFM, NEST, I-00185 Rome, Italy; Univ Pisa, Dipartimento Fis E Fermi, I-56127 Pisa, Italy; Scuola Normale Super Pisa, I-56126 Pisa, Italy; Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy (literal)
Titolo
  • Electronic conductance of one-dimensional chains with phonon dephasing disorder (literal)
Abstract
  • In this paper we analyse how electron transport through a one-dimensional chain is modified by the presence of phonon dephasing mechanisms active in a limited strand of the chain. The treatment is based on the nonequilibrium Keldysh Green's function and the self-consistent first Born approximation, with a tight-binding description of the electronic states. A most remarkable feature of the calculated conductance curves is the occurrence of an exponential decrease for small lengths, followed by a slow asymptotic decrease inversely proportional to the strand length. The origin of such a different short-range and long-range behaviour of the conductance, and other observed scaling features, are interpreted with some intuitive understanding of the dephasing mechanisms. (literal)
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