Andreev reflection in ferrimagnetic CoFe2O4 spin filters (Articolo in rivista)

Type
Label
  • Andreev reflection in ferrimagnetic CoFe2O4 spin filters (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.81.174415 (literal)
Alternative label
  • Rigato, F; Piano, S; Foerster, M; Giubileo, F; Cucolo, AM; Fontcuberta, J (2010)
    Andreev reflection in ferrimagnetic CoFe2O4 spin filters
    in Physical review. B, Condensed matter and materials physics; APS, American physical society, College Park, MD (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Rigato, F; Piano, S; Foerster, M; Giubileo, F; Cucolo, AM; Fontcuberta, J (literal)
Pagina inizio
  • 174415-1 (literal)
Pagina fine
  • 174415-6 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 81 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 17 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1Institut de Ciència de Materials de Barcelona, CSIC, Campus UAB, Bellaterra 08193, Spain 2School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom 3Physics Department and CNR-SPIN Salerno, c/o University of Salerno, Via Ponte don Melillo, 84084 Fisciano (SA), Italy (literal)
Titolo
  • Andreev reflection in ferrimagnetic CoFe2O4 spin filters (literal)
Abstract
  • We have performed point-contact spectroscopy measurements on a sample constituted by a metallic ferromagnetic oxide ?SrRuO3? bottom electrode and a tunnel ferrimagnetic ?CoFe2O4? barrier. Andreev reflection is observed across the tunnel barrier. From the comparison of Andreev reflection in SrRuO3 and across the CoFe2O4 barrier we infer that the ferrimagnetic barrier has a spin filter efficiency not larger than +13%. The observation of a moderate and positive spin filtering is discussed in the context of the microstructure of the barriers and symmetry-related spin-filtering effects. (literal)
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