Single-parameter pumping in graphene

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dc.contributor.author San-Jose, Pablo
dc.contributor.author Prada, Elsa
dc.contributor.author Kohler, Sigmund
dc.contributor.author Schomerus, Henning
dc.contributor.other UAM. Departamento de Física de la Materia Condensada es_ES
dc.date.accessioned 2016-04-25T15:04:27Z
dc.date.available 2016-04-25T15:04:27Z
dc.date.issued 2011-10-11
dc.identifier.citation Physical Review B 84.15 (2011): 155408 en_US
dc.identifier.issn 1098-0121 (print) es_ES
dc.identifier.issn 1550-235X (online) es_ES
dc.identifier.uri http://hdl.handle.net/10486/670746
dc.description.abstract We propose a quantum pump mechanism based on the particular properties of graphene, namely chirality and bipolarity. The underlying physics is the excitation of evanescent modes entering a potential barrier from one lead, while those from the other lead do not reach the driving region. This induces a large nonequilibrium current with electrons stemming from a broad range of energies, in contrast to the narrow resonances that govern the corresponding effect in semiconductor heterostructures. Moreover, the pump mechanism in graphene turns out to be robust, with a simple parameter dependence, which is beneficial for applications. Numerical results from a Floquet scattering formalism are complemented with analytical solutions for small to moderate driving en_US
dc.description.sponsorship We acknowledge support by the CSIC JAE-Doc program and the Spanish Ministry of Science and Innovation through Grant Nos. FIS2008-00124/FIS (P.S.-J), FIS2009-08744 (E.P.), and MAT2008-02626 (S.K.) en_US
dc.format.extent 6 pag. es_ES
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher American Physical Society en_US
dc.relation.ispartof Physical Review B - Condensed Matter and Materials Physics en_US
dc.rights © 2011 American Physical Society en_US
dc.title Single-parameter pumping in graphene en_US
dc.type article en
dc.subject.eciencia Física es_ES
dc.relation.publisherversion http://dx.doi.org/10.1103/PhysRevB.84.155408 es_ES
dc.identifier.doi 10.1103/PhysRevB.84.155408 es_ES
dc.identifier.publicationfirstpage 155408 es_ES
dc.identifier.publicationissue 15 es_ES
dc.identifier.publicationlastpage 155408 es_ES
dc.identifier.publicationvolume 84 es_ES
dc.relation.projectID Gobierno de España. FIS2008-00124/FIS es_ES
dc.relation.projectID Gobierno de España. MAT2008-02626 es_ES
dc.relation.projectID Gobierno de España. FIS2009-08744 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en
dc.rights.accessRights openAccess en


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