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dc.contributor.authorChakraborti, S.-
dc.contributor.authorSharma, A.-
dc.date.accessioned2024-10-14T09:39:44Z-
dc.date.available2024-10-14T09:39:44Z-
dc.date.issued2024-10-14-
dc.identifier.urihttp://dspace.iitrpr.ac.in:8080/xmlui/handle/123456789/4740-
dc.description.abstractWe propose a new class of non-uniform superlattice magnetic tunnel junctions (Nu-SLTJs) with the linear, Gaussian, Lorentzian, and Pöschl-Teller width and height based profiles manifesting a sizable enhancement in the TMR (≈104 − 106%) with a significant suppression in the switching bias (≈9 folds) owing to the physics of broad-band spin filtering. By exploring the negative differential resistance region in the current-voltage characteristics of the various Nu-SLTJs, we predict the Nu-SLTJs offer fastest spin transfer torque switching in the order of a few hundred picoseconds. We self-consistently employ the atomistic non-equilibrium Green’s function formalism coupled with the Landau-Lifshitz-Gilbert-Slonczewski equation to evaluate the device performance of the various Nu-SLTJs. We also present the design of minimal three-barrier Nu-SLTJs having significant TMR (≈104%) and large spin current for the ease of device fabrication. We hope that the class of Nu-SLTJs proposed in this work may lay the bedrock to embark on the exhilarating voyage of exploring various non-uniform superlattices for the next generation of spintronic devices.en_US
dc.language.isoen_USen_US
dc.subjectbroad-band spin filteringen_US
dc.subjectmagnetic tunnel junctionen_US
dc.subjectresonant tunnelingen_US
dc.subjectspin transfer torqueen_US
dc.subjecttunnel magnetoresistanceen_US
dc.titleNon-uniform superlattice magnetic tunnel junctionsen_US
dc.typeArticleen_US
Appears in Collections:Year-2023

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