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dc.contributor.authorTanatar, B.en_US
dc.contributor.authorMoldoveanu V.en_US
dc.date.accessioned2016-02-08T12:24:24Z
dc.date.available2016-02-08T12:24:24Z
dc.date.issued2010en_US
dc.identifier.urihttp://hdl.handle.net/11693/28584
dc.description.abstractWe study the effect of Rashba spin-orbit coupling on the spin interference in a non-interacting one-dimensional ring connected to two lead theoretically within the non-equilibrium Greens' function formalism. We compute the charge and spin currents and analyze their Aharonov-Bohm oscillations. The geometry of the system is conveniently described by the angle δ between the two leads. We show that for δ=180° (i.e for symmetrically coupled leads) a good tutering of up or down spin orientation is obtained around half-integer multiples of Φ/Φ0. These particular flux values correspond to degeneracy points for clockwise and counter-clockwise propagating state related to the same spin orientation in the local spin frame of the ring. In contrast, for the asymmetric coupling, i.e., δ=135° the filter efficiency is maximum around integer multiples of Φ/Φ0. The numerical results suggest that the spin filtering is obtained when the clockwise or counter-clockwise states interfere destructively. The spin filtering regime is stable against variations of the bias applied on the system. ©2010 IEEE.en_US
dc.language.isoEnglishen_US
dc.source.titleINEC 2010 - 2010 3rd International Nanoelectronics Conference, Proceedingsen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/INEC.2010.5425177en_US
dc.subjectAsymmetric couplingen_US
dc.subjectCounter-clockwiseen_US
dc.subjectDegeneracy pointen_US
dc.subjectFilter efficiencyen_US
dc.subjectLocal spinen_US
dc.subjectNon equilibriumen_US
dc.subjectNumerical resultsen_US
dc.subjectQuantum ringen_US
dc.subjectRashba couplingen_US
dc.subjectRashba spin-orbit couplingen_US
dc.subjectSpin currentsen_US
dc.subjectSpin filteringen_US
dc.subjectSpin interferenceen_US
dc.subjectSpin orientationsen_US
dc.subjectNanoelectronicsen_US
dc.subjectNumerical analysisen_US
dc.subjectSpin dynamicsen_US
dc.titleSpin filtering in a quantum ring with Rashba couplingen_US
dc.typeConference Paperen_US
dc.departmentDepartment of Physics
dc.citation.spage583en_US
dc.citation.epage584en_US
dc.identifier.doi10.1109/INEC.2010.5425177en_US


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