Spin effects in transport through non-Fermi-liquid quantum dots (Articolo in rivista)

Type
Label
  • Spin effects in transport through non-Fermi-liquid quantum dots (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.70.125323 (literal)
Alternative label
  • Cavaliere, F; Braggio, A; Sassetti, M; Kramer B (2004)
    Spin effects in transport through non-Fermi-liquid quantum dots
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cavaliere, F; Braggio, A; Sassetti, M; Kramer B (literal)
Pagina inizio
  • 125323 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prb.aps.org/abstract/PRB/v70/i12/e125323 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 70 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [Cavaliere, F; Sassetti, M] Dipartimento di Fisica Università di Genova, INFM-LAMIA, Via Dodecaneso 33, I-16146 Genova, Italy; [Braggio, A] Institut fur Theoretische Physik III, Universitatsstrasse 150, D-44801 Bochum, Germany; [Cavaliere, F; Kramer B] I. Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, D-20355 Hamburg, Germany (literal)
Titolo
  • Spin effects in transport through non-Fermi-liquid quantum dots (literal)
Abstract
  • The current-voltage characteristic of a one-dimensional quantum dot connected via tunnel barriers to interacting leads is calculated in the region of sequential tunneling. The spin of the electrons is taken into account. Non-Fermi liquid correlations implying spin-charge separation are assumed to be present in the dot and in the leads. It is found that the energetic distance of the peaks in the linear conductance shows a spin-induced parity effect at zero temperature T. The temperature dependence of the positions of the peaks depends on the non-Fermi liquid nature of the system. For nonsymmetric tunnel barriers negative differential conductances are predicted, which are related to the participation in the transport of collective states in the quantum dot with larger spins. Without spin-charge separation the negative differential conductances do not occur. Taking into account spin relaxation destroys the spin-induced conductance features. The possibility of observing in experiment the predicted effects are briefly discussed. (literal)
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