Symmetries in the collective excitations of an electron gas in core-shell nanowires (Articolo in rivista)

Type
Label
  • Symmetries in the collective excitations of an electron gas in core-shell nanowires (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.89.155416 (literal)
Alternative label
  • Royo M.[ 1,2 ] ; Bertoni A.[ 2 ] ; Goldoni G.[ 3,2 ] (2014)
    Symmetries in the collective excitations of an electron gas in core-shell nanowires
    in Physical review. B, Condensed matter and materials physics (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Royo M.[ 1,2 ] ; Bertoni A.[ 2 ] ; Goldoni G.[ 3,2 ] (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84899738689&partnerID=q2rCbXpz (literal)
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  • 89 (literal)
Rivista
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  • 15 (literal)
Note
  • Scopu (literal)
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  • [ 1 ] Univ Jaume 1, Dept Quim Fis & Analit, E-12080 Castellon de La Plana, Spain [ 2 ] CNR NANO S3, Inst Nanosci, I-41125 Modena, Italy [ 3 ] Univ Modena & Reggio Emilia, Dept Phys Informat & Math, I-41100 Modena, Italy (literal)
Titolo
  • Symmetries in the collective excitations of an electron gas in core-shell nanowires (literal)
Abstract
  • We study the collective excitations and inelastic light-scattering cross section of an electron gas confined in a GaAs/AlGaAs coaxial quantum well. These systems can be engineered in a core-multishell nanowire and inherit the hexagonal symmetry of the underlying nanowire substrate. As a result, the electron gas forms both quasi-one-dimensional channels and quasi-two-dimensional channels at the quantum-well bents and facets, respectively. Calculations are performed within the random-phase approximation and time-dependent density functional theory approaches. We derive symmetry arguments which allow one to enumerate and classify charge and spin excitations and determine whether excitations may survive to Landau damping. We also derive inelastic light-scattering selection rules for different scattering geometries. Computational issues stemming from the need to use a symmetry-compliant grid are also investigated systematically. © 2014 American Physical Society. (literal)
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