Magnetoresistance and magnetic ordering fingerprints in hydrogenated graphene
Entity
UAM. Departamento de Física de la Materia CondensadaDate
2011-06-30Citation
10.1103/PhysRevLett.107.016602
Physical Review Letters 107.1 (2011): 016602
ISSN
0031-9007 (print); 1079-7114 (online)DOI
10.1103/PhysRevLett.107.016602Funded by
Spanish Grants from MICINN to D. S. and J. J. P. (FIS2010-21883-C02-02, CSD2007-00010) and P. O. (FIS2009-12721-C04-01, CSD2007-00050) are acknowledged. D. S. acknowledges the Universidad de Alicante, a CSIC PhD Grant, and J. Fernández-Rossier. This work is connected to the Belgian Program on Interuniversity Attraction Poles (PAI6), the ARC on ‘‘Graphene, ’’ the ETSF e-I3 project (Grant No. 211956) and the Belgium FNRSProject
Gobierno de España. FIS2010-21883-C02-02; Gobierno de España. CSD2007-00010; Gobierno de España. FIS2009-12721-C04-01; Gobierno de España. CSD2007-00050Editor's Version
http://dx.doi.org/10.1103/PhysRevLett.107.016602Subjects
FísicaRights
© 2011 American Physical SocietyAbstract
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 ~7% are calculated for hydrogen densities around 0.25%. These theoretical results could serve as guidance for experimental observation of induced magnetism in graphene
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Google Scholar:Soriano, David
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Leconte, Nicolas
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Ordejón, Pablo
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Charlier, Jean Christophe
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Palacios Burgos, Juan José
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Roche, Stephan
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