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dc.contributor.author
Usaj, Gonzalo
dc.contributor.author
Cornaglia, Pablo S.
dc.contributor.author
Balseiro, Carlos Antonio
dc.date.available
2017-11-03T15:45:25Z
dc.date.issued
2014-02-15
dc.identifier.citation
Usaj, Gonzalo; Cornaglia, Pablo S.; Balseiro, Carlos Antonio; Partial preservation of chiral symmetry and colossal magnetoresistance in adatom-doped graphene; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 89; 8; 15-2-2014; 085405,1-5
dc.identifier.issn
1098-0121
dc.identifier.uri
http://hdl.handle.net/11336/27547
dc.description.abstract
We analyze the electronic properties of adatom-doped graphene in the low-impurity-concentration regime. We focus on the Anderson localized regime and calculate the localization length ξ as a function of the electron doping and an external magnetic field. The impurity states hybridize with carbon's pz states and form a partially filled band close to the Dirac point. Near the impurity band center, the chiral symmetry of the system's effective Hamiltonian is partially preserved, which leads to a large enhancement of ξ. The sensitivity of transport properties, namely, Mott's variable range hopping scale T0, to an external magnetic field perpendicular to the graphene sheet leads to a colossal magnetoresistance effect, as observed in recent experiments.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Graphene
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Disorder
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Transport
dc.subject
Impurities
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Otras Ciencias Físicas
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Partial preservation of chiral symmetry and colossal magnetoresistance in adatom-doped graphene
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-29T16:33:39Z
dc.journal.volume
89
dc.journal.number
8
dc.journal.pagination
085405,1-5
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Usaj, Gonzalo. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Cornaglia, Pablo S.. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Balseiro, Carlos Antonio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Physical Review B: Condensed Matter and Materials Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.89.085405
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevB.89.085405
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