Probing collective modes of correlated states of few electrons in semiconductor quantum dots (Articolo in rivista)

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Label
  • Probing collective modes of correlated states of few electrons in semiconductor quantum dots (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.ssc.2009.04.034 (literal)
Alternative label
  • Kalliakos, S; Rontani, M; Pellegrini, V; Pinczuk, A; Shinga, A; Garcia, CP; Goldoni, G; Molinari, E; Pfeiffer, LN; West, KW (2009)
    Probing collective modes of correlated states of few electrons in semiconductor quantum dots
    in Solid state communications (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Kalliakos, S; Rontani, M; Pellegrini, V; Pinczuk, A; Shinga, A; Garcia, CP; Goldoni, G; Molinari, E; Pfeiffer, LN; West, KW (literal)
Pagina inizio
  • 1436 (literal)
Pagina fine
  • 1442 (literal)
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  • http://www.sciencedirect.com/science/article/pii/S0038109809002592 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 149 (literal)
Rivista
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  • 7 (literal)
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  • 35-36 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Kalliakos: Univ Crete, Dept Mat Sci & Technol, Iraklion 71003, Greece Rontani, Goldoni, Molinari: Univ Modena & Reggio Emilia, INFM CNR S3, I-41100 Modena, Italy Rontani, Goldoni, Molinari: Univ Modena & Reggio Emilia, Dept Phys, I-41100 Modena, Italy Kalliakos, Pellegrini, Shinga, Garcia: NEST INFM CNR, Pisa, Italy Kalliakos, Pellegrini, Shinga, Garcia: Scuola Normale Super Pisa, Pisa, Italy Pinczuk: Columbia Univ, Dept Phys, New York, NY 10027 USA Pinczuk: Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA Pfeiffer, West: Bell Labs, Alcatel Lucent, Murray Hill, NJ 07974 USA (literal)
Titolo
  • Probing collective modes of correlated states of few electrons in semiconductor quantum dots (literal)
Abstract
  • Low-lying collective excitations above highly correlated ground states of few interacting electrons confined in GaAs semiconductor quantum dots are probed by resonant inelastic light scattering. We highlight that separate studies of the changes in the spin and charge degrees of freedom offer unique access to the fundamental interactions. The case of quantum dots with four electrons is found to be determined by a competition between triplet and singlet ground states that is uncovered in the rich light scattering spectra of spin excitations. These light scattering results are described within a configuration-interaction framework that captures the role of electron correlation with quantitative accuracy. Recent light scattering results that reveal the impact of anisotropic confining potentials in laterally coupled quantum dots are also reviewed. In these studies, inelastic light scattering methods emerge as powerful probes of collective phenomena and spin configurations in quantum dots with few electrons. (literal)
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