Neutral modes' edge state dynamics through quantum point contacts (Articolo in rivista)

Type
Label
  • Neutral modes' edge state dynamics through quantum point contacts (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/1367-2630/12/1/013012 (literal)
Alternative label
  • Ferraro, D; Braggio, A; Magnoli, N; Sassetti M (2010)
    Neutral modes' edge state dynamics through quantum point contacts
    in New journal of physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ferraro, D; Braggio, A; Magnoli, N; Sassetti M (literal)
Pagina inizio
  • 013012 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/1367-2630/12/1/013012 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 12 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [Ferraro, D; Magnoli, N] Dipartimento di Fisica, Università di Genova, INFN, Via Dodecaneso 33, 16146 Genova, Italy; [Braggio, A; Sassetti M] Dipartimento di Fisica, Università di Genova, CNR-INFM LAMIA, Via Dodecaneso 33, 16146 Genova, Italy (literal)
Titolo
  • Neutral modes' edge state dynamics through quantum point contacts (literal)
Abstract
  • The dynamics of neutral modes for fractional quantum Hall states is investigated for a quantum point contact geometry in the weak-backscattering regime. The effective field theory introduced by Fradkin-Lopez for edge states in the Jain sequence is generalized to the case of propagating neutral modes. The dominant tunnelling processes are identified also in the presence of non-universal phenomena induced by interactions. The crossover regime in the backscattering current between tunnelling of single-quasiparticles and of agglomerates of p-quasiparticles is analysed. We demonstrate that higher-order cumulants of the backscattering current fluctuations are a unique resource to study quantitatively the competition between different carrier charges. We find that propagating neutral modes are a necessary ingredient in order to explain this crossover phenomenon. (literal)
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