Fano effect in a double T-shaped interferometer

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buir.contributor.authorTanatar, Bilal
buir.contributor.orcidTanatar, Bilal|0000-0002-5246-0119
dc.citation.epage238en_US
dc.citation.issueNumber2en_US
dc.citation.spage231en_US
dc.citation.volumeNumber67en_US
dc.contributor.authorMoldoveanu, V.en_US
dc.contributor.authorDinu, I. V.en_US
dc.contributor.authorTanatar, Bilalen_US
dc.date.accessioned2016-02-08T10:05:56Z
dc.date.available2016-02-08T10:05:56Z
dc.date.issued2009en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe study the coherent transport in a one-dimensional lead with two side-coupled quantum dots using the Keldysh's Green function formalism.The effect of the interdot Coulomb interaction is taken into account by computing the firstand second order contributions to the self-energy.We show that the Fano interference due to the resonance of one dotis strongly affected by the fixed parameters that characterize the second dot. If the second dot is tuned close to resonance an additionalpeak develops between the peak and dip of the Fano line shape of the current. In contrast, when the second dotis off-resonance and its occupation number is close to unity the interdot Coulomb interaction merely shifts the Fano line and no other maxima appear.The system we consider is more general than the single-dot interferometer studied experimentally by Kobayashi et al. [Phys. Rev. B 70, 035319 (2004)] and may be used for controlling quantum interference and studying decoherence effects in mesoscopic transport.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:05:56Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2009en
dc.identifier.doi10.1140/epjb/e2009-00012-0en_US
dc.identifier.issn1434-6028
dc.identifier.urihttp://hdl.handle.net/11693/22875
dc.language.isoEnglishen_US
dc.publisherSpringeren_US
dc.relation.isversionofhttp://dx.doi.org/10.1140/epjb/e2009-00012-0en_US
dc.source.titleEuropean Physical Journal Ben_US
dc.subjectCoherent transportsen_US
dc.subjectDecoherence effectsen_US
dc.subjectFano effectsen_US
dc.subjectFano interferenceen_US
dc.subjectFixed parametersen_US
dc.subjectGreen functionen_US
dc.subjectLine shapeen_US
dc.subjectMesoscopic transporten_US
dc.subjectOff-resonanceen_US
dc.subjectQuantum interferenceen_US
dc.subjectSecond ordersen_US
dc.subjectSide-coupled quantum doten_US
dc.subjectCoulomb interactionsen_US
dc.subjectInterferometersen_US
dc.subjectInterferometryen_US
dc.subjectResonanceen_US
dc.subjectSemiconductor quantum dotsen_US
dc.subjectQuantum chemistryen_US
dc.titleFano effect in a double T-shaped interferometeren_US
dc.typeArticleen_US

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