Time-dependent transport in Aharonov-Bohm interferometers

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dc.authoridRäsänen, Esa/0000-0001-8736-4496
dc.authoridSiddiki, Afif/0000-0001-5045-0358
dc.authorwosidRäsänen, Esa/D-3014-2009
dc.contributor.authorKotimaki, V.
dc.contributor.authorCicek, E.
dc.contributor.authorSiddiki, A.
dc.contributor.authorRasanen, E.
dc.date.accessioned2024-06-12T11:19:45Z
dc.date.available2024-06-12T11:19:45Z
dc.date.issued2012
dc.departmentTrakya Üniversitesien_US
dc.description.abstractA numerical approach is employed to explain transport characteristics in realistic, quantum Hall-based Aharonov-Bohm (AB) interferometers. Firstly, the spatial distribution of incompressible strips, and thus the current channels, are obtained by applying a self-consistent Thomas-Fermi method to a realistic heterostructure under quantized Hall conditions. Secondly, the time-dependent Schrodinger equation is solved for electrons injected in the current channels. Distinctive AB oscillations are found as a function of the magnetic flux. The oscillation amplitude strongly depends on the mutual distance between the transport channels and on their width. At an optimal distance the amplitude and thus the interchannel transport is maximized, which determines the maximum visibility condition. On the other hand, the transport is fully suppressed at magnetic fields corresponding to half-integer flux quanta. The results confirm the applicability of realistic AB interferometers as controllable current switches.en_US
dc.description.sponsorshipMagnus Ehrnrooth Foundation; Academy of Finland; Wihuri Foundation; [TUBITAK:109T083]; [IU-BAP:6970]en_US
dc.description.sponsorshipThis work was supported by the Magnus Ehrnrooth Foundation, the Academy of Finland, TUBITAK:109T083, IU-BAP:6970 and the Wihuri Foundation. CSC Scientific Computing Ltd is acknowledged for computational resources. AS would like to thank M Heiblum, N Offek and L Litvin for experimental discussions. We are also grateful to V J Goldman for providing us with the sample structure and device pattern.en_US
dc.identifier.doi10.1088/1367-2630/14/5/053024
dc.identifier.issn1367-2630
dc.identifier.scopus2-s2.0-84861925361en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1088/1367-2630/14/5/053024
dc.identifier.urihttps://hdl.handle.net/20.500.14551/25325
dc.identifier.volume14en_US
dc.identifier.wosWOS:000304874800003en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIop Publishing Ltden_US
dc.relation.ispartofNew Journal Of Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectQuantum Hall Regimeen_US
dc.subjectConductanceen_US
dc.subjectPhaseen_US
dc.titleTime-dependent transport in Aharonov-Bohm interferometersen_US
dc.typeArticleen_US

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