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Article: Fano effect in the Coulomb blockade regime for a parallel-coupled double quantum dot system

TitleFano effect in the Coulomb blockade regime for a parallel-coupled double quantum dot system
Authors
KeywordsCoulomb blockade
Fano effect
Mesoscopic transport
Parallel-coupled double quantum dots
Issue Date2006
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/physe
Citation
Physica E: Low-Dimensional Systems And Nanostructures, 2006, v. 34 n. 1-2, p. 538-541 How to Cite?
AbstractWithin the Keldysh non-equilibrium Green function formalism, the electronic transport is theoretically studied through a parallel-coupled double quantum dot (DQD). In Coulomb blockage regime, four states in the DQD system, corresponding to the bonding and antibonding molecular states due to the inter-dot coupling and their Coulomb blockade counterparts, each could contribute to the Resonant transport as a Breit-Wigner scatter in the single-particle picture, which is secured in the Hartree-Fock approximation we applied. The Fano effect arises in conductance spectra as the result of interference between the four states. Moreover, the possibility of manipulating the Fano lineshape is also investigated by tuning dot-lead couplings and the magnetic flux threading the ring connecting the dots and leads, in particular a possible swap effect, which might be as a qubit applied to the quantum computation. © 2006 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/147665
ISSN
2015 Impact Factor: 1.904
2015 SCImago Journal Rankings: 0.636
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLu, Hen_HK
dc.contributor.authorLü, Ren_HK
dc.contributor.authorZhu, Bfen_HK
dc.date.accessioned2012-05-29T06:07:37Z-
dc.date.available2012-05-29T06:07:37Z-
dc.date.issued2006en_HK
dc.identifier.citationPhysica E: Low-Dimensional Systems And Nanostructures, 2006, v. 34 n. 1-2, p. 538-541en_HK
dc.identifier.issn1386-9477en_HK
dc.identifier.urihttp://hdl.handle.net/10722/147665-
dc.description.abstractWithin the Keldysh non-equilibrium Green function formalism, the electronic transport is theoretically studied through a parallel-coupled double quantum dot (DQD). In Coulomb blockage regime, four states in the DQD system, corresponding to the bonding and antibonding molecular states due to the inter-dot coupling and their Coulomb blockade counterparts, each could contribute to the Resonant transport as a Breit-Wigner scatter in the single-particle picture, which is secured in the Hartree-Fock approximation we applied. The Fano effect arises in conductance spectra as the result of interference between the four states. Moreover, the possibility of manipulating the Fano lineshape is also investigated by tuning dot-lead couplings and the magnetic flux threading the ring connecting the dots and leads, in particular a possible swap effect, which might be as a qubit applied to the quantum computation. © 2006 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/physeen_HK
dc.relation.ispartofPhysica E: Low-Dimensional Systems and Nanostructuresen_HK
dc.subjectCoulomb blockadeen_HK
dc.subjectFano effecten_HK
dc.subjectMesoscopic transporten_HK
dc.subjectParallel-coupled double quantum dotsen_HK
dc.titleFano effect in the Coulomb blockade regime for a parallel-coupled double quantum dot systemen_HK
dc.typeArticleen_HK
dc.identifier.emailLu, H: luhz@hku.hken_HK
dc.identifier.authorityLu, H=rp01599en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.physe.2006.03.144en_HK
dc.identifier.scopuseid_2-s2.0-33746392751en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33746392751&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume34en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage538en_HK
dc.identifier.epage541en_HK
dc.identifier.isiWOS:000239903200136-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLu, H=24376662200en_HK
dc.identifier.scopusauthoridLü, R=26643365900en_HK
dc.identifier.scopusauthoridZhu, Bf=7401683321en_HK

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