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dc.contributor.authorSanz, Sofíaes_ES
dc.contributor.authorBrandimarte, Pedroes_ES
dc.contributor.authorGiedke, G.es_ES
dc.contributor.authorSánchez-Portal, Danieles_ES
dc.contributor.authorFrederiksen, Thomases_ES
dc.date.accessioned2021-01-11T10:50:42Z-
dc.date.available2021-01-11T10:50:42Z-
dc.date.issued2020-
dc.identifier.citationPhysical Review B 102(3): 035436 (2020)es_ES
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10261/226350-
dc.description.abstractWe analyze theoretically four-terminal electronic devices composed of two crossed graphene nanoribbons (GNRs) and show that they can function as beam splitters or mirrors. These features are identified for electrons in the low-energy region where a single valence or conduction band is present. Our modeling is based on p z orbital tight binding with Slater-Koster-type matrix elements fitted to accurately reproduce the low-energy bands from density functional theory calculations. We analyze systematically all devices that can be constructed with either zigzag or armchair GNRs in AA and AB stackings. From Green's function theory the elastic electron transport properties are quantified as a function of the ribbon width. We find that devices composed of relatively narrow zigzag GNRs and AA-stacked armchair GNRs are the most interesting candidates to realize electron beam splitters with a close to 50:50 ratio in the two outgoing terminals. Structures with wider ribbons instead provide electron mirrors, where the electron wave is mostly transferred into the outgoing terminal of the other ribbon, or electron filters where the scattering depends sensitively on the wavelength of the propagating electron. We also test the robustness of these transport properties against variations in the intersection angle, stacking pattern, lattice deformation (uniaxial strain), inter-GNR separation, and electrostatic potential differences between the layers. These generic features show that GNRs are interesting basic components to construct electronic quantum optical setups.es_ES
dc.description.sponsorshipThis work was supported by the project Spanish Ministerio de Economía y Competitividad (MINECO) through the Grants no. FIS2017-83780-P (Graphene Nanostructures “GRANAS”) and no.MAT2016-78293-C6-4R, the Basque Departamento de Educación through the PhD fellowship no. PRE_2019_2_0218 (S.S.), the University of the Basque Country through the Grant no. IT1246-19, and the European Union (EU) through Horizon 2020 (FET-Open project SPRING Grant no. 863098).es_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.relationFIS2017-83780-P/AEI/10.13039/501100011033es_ES
dc.relationMICIU/ICTI2017-2020/FIS2017-83780-Pes_ES
dc.relationMINECO/ICTI2013-2016/MAT2016-78293-C6-4Res_ES
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/863098es_ES
dc.relation.isversionofPublisher's versiones_ES
dc.rightsopenAccesses_ES
dc.titleCrossed graphene nanoribbons as beam splitters and mirrors for electron quantum opticses_ES
dc.typeartículoes_ES
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.102.035436-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttps://doi.org/10.1103/PhysRevB.102.035436es_ES
dc.rights.licensehttp://creativecommons.org/licenses/by/4.0/es_ES
dc.contributor.funderMinisterio de Economía y Competitividad (España)es_ES
dc.contributor.funderAgencia Estatal de Investigación (España)es_ES
dc.contributor.funderMinisterio de Ciencia, Innovación y Universidades (España)es_ES
dc.contributor.funderEuropean Commissiones_ES
dc.contributor.funderEusko Jaurlaritzaes_ES
dc.contributor.funderUniversidad del País Vascoes_ES
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003086es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100011033es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
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