Tunneling between helical edge states through extended contacts (Articolo in rivista)

Type
Label
  • Tunneling between helical edge states through extended contacts (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.85.195138 (literal)
Alternative label
  • G. Dolcetto1,2,3, S. Barbarino1, D. Ferraro1,2,3, N. Magnoli1,3, and M. Sassetti1,2 (2012)
    Tunneling between helical edge states through extended contacts
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G. Dolcetto1,2,3, S. Barbarino1, D. Ferraro1,2,3, N. Magnoli1,3, and M. Sassetti1,2 (literal)
Pagina inizio
  • 7 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://link.aps.org/doi/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 85 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 19 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1Dipartimento di Fisica, Università di Genova,Via Dodecaneso 33, 16146 Genova, Italy 2CNR-SPIN, Via Dodecaneso 33, 16146 Genova, Italy 3INFN, Via Dodecaneso 33, 16146 Genova, Italy (literal)
Titolo
  • Tunneling between helical edge states through extended contacts (literal)
Abstract
  • We consider a quantum spin Hall system in a two-terminal setup, with an extended tunneling contact connecting upper and lower edges. We analyze the effects of this geometry on the backscattering current as a function of voltage, temperature, and strength of the electron interactions. We find that this configuration may be useful to confirm the helical nature of the edge states and to extract their propagation velocity. By comparing with the usual quantum point-contact geometry, we observe that the power-law behaviors predicted for the backscattering current and the linear conductance are recovered for low enough energies, while different power laws also emerge at higher energies (literal)
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