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Magnetoresistance and Magnetic Ordering Fingerprints in Hydrogenated Graphene

Onglets principaux

Soriano, David [] Leconte, Nicolas [] Ordejon, Pablo [] Charlier, Jean-Christophe [] Palacios, Juan-Jose [] Roche, Stephan []

Spin-dependent features in the conductivity of graphene, chemically modified by a random distribution of hydrogen adatoms, are explored theoretically. The spin effects are taken into account using a mean-field self-consistent Hubbard model derived from first-principles calculations. A Kubo transport methodology is used to compute the spin-dependent transport fingerprints of weakly hydrogenated graphene-based systems with realistic sizes. Conductivity responses are obtained for paramagnetic, antiferromagnetic, or ferromagnetic macroscopic states, constructed from the mean-field solutions obtained for small graphene supercells. Magnetoresistance signals up to similar to 7% are calculated for hydrogen densities around 0.25%. These theoretical results could serve as guidance for experimental observation of induced magnetism in graphene.

Type de document Article de périodique (Journal article) – Article de recherche
Type d'accès Accès restreint
Année de publication 2011
Langue Anglais
Information sur le périodique "Physical review letters" - Vol. 107, no. 1, p. 016602 (2011)
Peer reviewed oui
issn 0031-9007
Statut de la publication Publié
Affiliations UCL - SST/IMCN/NAPS - Nanoscopic Physics
Mots-clés CISM CECI
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Référence bibliographique Soriano, David ; Leconte, Nicolas ; Ordejon, Pablo ; Charlier, Jean-Christophe ; Palacios, Juan-Jose ; et. al. Magnetoresistance and Magnetic Ordering Fingerprints in Hydrogenated Graphene. In: Physical review letters, Vol. 107, no. 1, p. 016602 (2011)
Permalien http://hdl.handle.net/2078/88948