Generating and controlling spin-polarized currents induced by a quantum spin Hall antidot (Articolo in rivista)

Type
Label
  • Generating and controlling spin-polarized currents induced by a quantum spin Hall antidot (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.87.085425 (literal)
Alternative label
  • Dolcetto, G.abc, Cavaliere, F.ab, Ferraro, D.bcd, Sassetti, M.ab (2013)
    Generating and controlling spin-polarized currents induced by a quantum spin Hall antidot
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Dolcetto, G.abc, Cavaliere, F.ab, Ferraro, D.bcd, Sassetti, M.ab (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84874544780&partnerID=q2rCbXpz (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 87 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy b Consiglio Nazionale Delle Ricerche-Superconductors, Oxides and Other Innovative Materials and Devices (SPIN), Via Dodecaneso 33, 16146 Genova, Italy c Istituto Nazionale di Fisica Nucleare, Via Dodecaneso 33, 16146 Genova, Italy d Université de Lyon, Centre National de la Recherche Scientifique, Laboratoire de Physique de l'Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon Cedex 07, France (literal)
Titolo
  • Generating and controlling spin-polarized currents induced by a quantum spin Hall antidot (literal)
Abstract
  • We study an electrically controlled quantum spin Hall antidot embedded in a two-dimensional topological insulating bar. Helical edge states around the antidot and along the edges of the bar are tunnel coupled. The close connection between spin and chirality, typical of helical systems, allows to generate a spin-polarized current flowing across the bar. This current is studied as a function of the external voltages, by varying the asymmetry between the barriers. For asymmetric setups, a switching behavior of the spin current is observed as the bias is increased, both in the absence and in the presence of electron interactions. This device allows to generate and control the spin-polarized current by simple electrical means. © 2013 American Physical Society. (literal)
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