Mesoscopic fano effect in Aharonov-Bohm rings with an embedded double dot

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buir.contributor.orcidTanatar, Bilal|0000-0002-5246-0119
dc.citation.epage1404en_US
dc.citation.spage1403en_US
dc.citation.volumeNumber850en_US
dc.contributor.authorTanatar, Bilalen_US
dc.contributor.authorMoldoveanu, V.en_US
dc.contributor.authorTolea, M.en_US
dc.contributor.authorAldea, A.en_US
dc.coverage.spatialOrlando, Florida, USAen_US
dc.date.accessioned2016-02-08T11:45:57Zen_US
dc.date.available2016-02-08T11:45:57Zen_US
dc.date.issued2006en_US
dc.departmentDepartment of Physicsen_US
dc.descriptionDate of Conference: 10-17 August 2005en_US
dc.descriptionConference Name: Low Temperature Physics: 24th International Conference on Low Temperature Physics, LT24 2005en_US
dc.description.abstractWe investigate theoretically in a tight-binding model the transport properties of the Aharonov-Bohm interferometer (ABI) with one dot embedded in each of its arms. For weak interdot coupling the model Hamiltonian describes the system considered in the experiments of Holleitner et al. [Phys. Rev. Lett. 87, 256802 (2001)]. The electronic transmittance of the interferometer is computed within the Landauer-Büttiker formalism while the coexistence of resonant and coherent transport is explicitly emphasized by using the Feschbach formula. The latter produces effective Hamiltonians whose spectral properties describe the tunneling processes through each dot. We reproduce numerically the stability charging diagrams reported in the experiments of Holleitner et al. When the magnetic flux is fixed and one dot is set to resonance the interferometer transmittance shows Fano lineshapes as a function of the gate voltage applied to the other dot. Our model includes the effect of the magnetic field on the dot levels and explains the change of the asymmetric tail as the magnetic flux is varied. The transmittance assigned to the Fano dips located in the almost crossing point of the charging diagrams shows Aharonov-Bohm oscillations.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T11:45:57Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2006en
dc.identifier.doi10.1063/1.2355227en_US
dc.identifier.issn0094-243Xen_US
dc.identifier.urihttp://hdl.handle.net/11693/27151en_US
dc.language.isoEnglishen_US
dc.publisherAmerican Institute of Physicsen_US
dc.relation.isversionofhttp://dx.doi.org/10.1063/1.2355227en_US
dc.source.titleAIP Conference Proceedingsen_US
dc.subjectAharonov-Bohm interferometeren_US
dc.subjectFano effecten_US
dc.subjectQuantum dotsen_US
dc.titleMesoscopic fano effect in Aharonov-Bohm rings with an embedded double doten_US
dc.typeConference Paperen_US

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