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dc.contributor.authorKrich, Jacob
dc.contributor.authorHalperin, Bertrand
dc.date.accessioned2009-06-17T14:53:50Z
dc.date.issued2008
dc.identifier.citationKrich, Jacob J. and Bertrand I. Halperin. 2008. Spin polarized current generation from quantum dots without magnetic fields. Physical Review B 78, no. 3: 035338.en
dc.identifier.issn1098-0121en
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:3110943
dc.description.abstractAn unpolarized charge current passing through a chaotic quantum dot with spin-orbit coupling can produce a spin-polarized exit current without magnetic fields or ferromagnets. We use random matrix theory to estimate the typical spin polarization as a function of the number of channels in each lead in the limit of large spin-orbit coupling. We find rms spin polarizations up to 45% with one input channel and two output channels. Finite temperature and dephasing both suppress the effect, and we include dephasing effects using a variation of the third lead model. If there is only one channel in the output lead, no spin polarization can be produced, but we show that dephasing lifts this restriction.en
dc.description.sponsorshipPhysicsen
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevB.78.035338en
dc.relation.hasversionhttp://arxiv.org/abs/0801.2592v2en
dash.licenseOAP
dc.subjectspin-orbit interactionsen
dc.subjectspin polarised transporten
dc.subjectquantum dotsen
dc.titleSpin Polarized Current Generation from Quantum Dots without Magnetic Fieldsen
dc.relation.journalPhysical Review Ben
dash.depositing.authorHalperin, Bertrand
dc.identifier.doi10.1103/PhysRevB.78.035338*
dash.contributor.affiliatedKrich, Jacob Jonathan
dash.contributor.affiliatedHalperin, Bertrand


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