Signatures of molecular correlations in few-electron dynamics of coupled quantum dots (Articolo in rivista)

Type
Label
  • Signatures of molecular correlations in few-electron dynamics of coupled quantum dots (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.76.233303 (literal)
Alternative label
  • Andrea Bertoni and Juan I. Climente and Massimo Rontani and Guido Goldoni and Ulrich Hohenester (2007)
    Signatures of molecular correlations in few-electron dynamics of coupled quantum dots
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Andrea Bertoni and Juan I. Climente and Massimo Rontani and Guido Goldoni and Ulrich Hohenester (literal)
Pagina inizio
  • 233303 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://link.aps.org/doi/10.1103/PhysRevB.76.233303 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 76 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Natl Res Ctr Nanostruct & Biosyst Surfaces S3, INFM, CNR, I-41100 Modena, Italy; Univ Modena, Dipartimento Fis, I-41100 Modena, Italy; Karl Franzens Univ Graz, Inst Phys, A-8010 Graz, Austria NANO - Istituto Nanoscienze (literal)
Titolo
  • Signatures of molecular correlations in few-electron dynamics of coupled quantum dots (literal)
Abstract
  • We study the effect of Coulomb interaction on the few-electron dynamics in coupled semiconductor quantum dots by exact diagonalization of the few-body Hamiltonian. The oscillation of carriers is strongly affected by the number of confined electrons and by the strength of the interdot correlations. Single-frequency oscillations are found for either uncorrelated or highly correlated states, while multifrequency oscillations take place in the intermediate regime. Moreover, Coulomb interaction renders few-particle oscillations sensitive to perturbations in spatial directions other than that of the tunneling, contrary to the single-particle case. The inclusion of acoustic phonon scattering does not modify the carrier dynamics substantially at short times, but it can damp oscillation modes selectively at long times. (literal)
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