Spin-transport selectivity upon Co adsorption on antiferromagnetic graphene nanoribbons (Articolo in rivista)

Type
Label
  • Spin-transport selectivity upon Co adsorption on antiferromagnetic graphene nanoribbons (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.3478317 (literal)
Alternative label
  • Cocchi C., Prezzi D., Calzolari A. and Molinari E. (2010)
    Spin-transport selectivity upon Co adsorption on antiferromagnetic graphene nanoribbons
    in The Journal of chemical physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cocchi C., Prezzi D., Calzolari A. and Molinari E. (literal)
Pagina inizio
  • 124703 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 133 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • Issue: 12 Article Number: 124703 Acknowledgement: The authors thank Silvia Picozzi and Marco Affronte for fruitful discussions. This work was partly supported by \"Fondazione Cassa di Risparmio di Modena\", Italian Ministry of Foreign Affairs (MAE) and FIRB grant ItalNanoNet. The CPU time was provided by CINECA through the CNR-INFM agreement. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. CNR, Ctr S3, Ist Nanosci, I-41125 Modena, Italy (Cocchi C., Prezzi D., Calzolari A., Molinari E.) 2. Univ Modena & Reggio Emilia, Dipartimento Fis, I-41125 Modena, Italy (Cocchi C., Molinari E.) (literal)
Titolo
  • Spin-transport selectivity upon Co adsorption on antiferromagnetic graphene nanoribbons (literal)
Abstract
  • We investigate from first principles the electronic and transport properties of zigzag graphene nanoribbons in the presence of Co adatoms. Comparing different adsorption sites across the width, we find that the Co-C coupling is rather sensitive to the local environment. While a net spin polarization appears in all cases, the spin filtering effect is significantly enhanced when the Co adatom is at the edge, where the adsorption energy is maximized and a partial suppression of edge-associated transport channels occurs. We also probe the magnetic interaction in the nonbonding regime, for Co-graphene nanoribbon (GNR) distances ranging from adsorption to pi-pi typical configurations. Our results indicate that Co-GNR coupling is still appreciable in an intermediate range, whereas it becomes vanishingly small in the limit of pi-pi distances. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3478317] (literal)
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