Local current distribution at large quantum dots (QDs): A self-consistent screening model

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dc.citation.epage1144en_US
dc.citation.issueNumber5en_US
dc.citation.spage1142en_US
dc.citation.volumeNumber40en_US
dc.contributor.authorKrishna, P. M.en_US
dc.contributor.authorSiddiki, A.en_US
dc.contributor.authorGüven, K.en_US
dc.contributor.authorHakioǧlu T.en_US
dc.date.accessioned2016-02-08T10:10:11Z
dc.date.available2016-02-08T10:10:11Z
dc.date.issued2008en_US
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractWe report the implementation of the self-consistent Thomas-Fermi screening theory, together with the local Ohm's law to a quantum dot system in order to obtain local current distribution within the dot and at the leads. We consider a large dot (size > 700 nm) defined by split gates, and coupled to the leads. Numerical calculations show that the non-dissipative current is confined to the incompressible strips. Due to the non-linear screening properties of the 2DES at low temperatures, this distribution is highly sensitive to external magnetic field. Our findings support the phenomenological models provided by the experimental studies so far, where the formation of the (direct) edge channels dominate the transport.en_US
dc.identifier.doi10.1016/j.physe.2007.08.055en_US
dc.identifier.issn1386-9477
dc.identifier.urihttp://hdl.handle.net/11693/23196
dc.language.isoEnglishen_US
dc.publisherElsevier B.V.en_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.physe.2007.08.055en_US
dc.source.titlePhysica E : Low-Dimensional Systems and Nanostructuresen_US
dc.subjectEdge statesen_US
dc.subjectQuantum dotsen_US
dc.subjectQuantum hall effecten_US
dc.subjectScreeningen_US
dc.subjectComputation theoryen_US
dc.subjectFermi levelen_US
dc.subjectHall effecten_US
dc.subjectMagnetic fieldsen_US
dc.subjectNumerical methodsen_US
dc.subjectEdge statesen_US
dc.subjectLocal current distributionen_US
dc.subjectThomas-Fermi screening theoryen_US
dc.subjectSemiconductor quantum dotsen_US
dc.titleLocal current distribution at large quantum dots (QDs): A self-consistent screening modelen_US
dc.typeArticleen_US

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