Ferromagnetic resonant tunneling diodes as spin polarimeters and polarizers

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dc.creatorGiazotto, Francesco
dc.creatorTaddei, Fabio
dc.creatorFazio, Rosario
dc.creatorBeltram, Fabio
dc.date2002-12-11
dc.date.accessioned2026-07-07T09:49:41Z
dc.date.available2026-07-07T09:49:41Z
dc.descriptionA method for measuring the degree of spin polarization of magnetic materials based on spin-dependent resonant tunneling is proposed. The device we consider is a ballistic double-barrier resonant structure consisting of a ferromagnetic layer embedded between two insulating barriers. A simple procedure, based on a detailed analysis of the differential conductance, allows to accurately determine the polarization of the ferromagnet. The spin-filtering character of such a system is furthermore addressed. We show that a 100% spin selectivity can be achieved under appropriate conditions. This approach is believed to be well suited for the investigation of diluted magnetic semiconductor heterostructures.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0212242
dc.identifierhttp://arxiv.org/abs/cond-mat/0212242
dc.identifierAppl. Phys. Lett. 82, 2449 (2003)
dc.identifierdoi:10.1063/1.1567812
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/164681
dc.subjectMesoscale and Nanoscale Physics
dc.subjectMaterials Science
dc.titleFerromagnetic resonant tunneling diodes as spin polarimeters and polarizers
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