Ferromagnetic Kondo Effect in a Triple Quantum Dot System (Articolo in rivista)

Type
Label
  • Ferromagnetic Kondo Effect in a Triple Quantum Dot System (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.111.047201 (literal)
Alternative label
  • Baruselli, P. P.; Requist, R.; Fabrizio, M.; Tosatti, E. (2013)
    Ferromagnetic Kondo Effect in a Triple Quantum Dot System
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Baruselli, P. P.; Requist, R.; Fabrizio, M.; Tosatti, E. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 111 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • International School for Advanced Studies; CNR IOM; Abdus Salam International Centre for Theoretical Physics (literal)
Titolo
  • Ferromagnetic Kondo Effect in a Triple Quantum Dot System (literal)
Abstract
  • A simple device of three laterally coupled quantum dots, the central one contacted by metal leads, provides a realization of the ferromagnetic Kondo model, which is characterized by interesting properties like a nonanalytic inverted zero-bias anomaly and an extreme sensitivity to a magnetic field. Tuning the gate voltages of the lateral dots allows us to study the transition from a ferromagnetic to antiferromagnetic Kondo effect, a simple case of a Berezinskii-Kosterlitz-Thouless transition. We model the device by three coupled Anderson impurities that we study by numerical renormalization group. We calculate the single-particle spectral function of the central dot, which at zero frequency is proportional to the zero-bias conductance, across the transition, both in the absence and in the presence of a magnetic field. (literal)
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