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dc.contributor.authorUseinov, Arthur
dc.contributor.authorKosel, Jürgen
dc.date.accessioned2015-08-04T07:01:01Z
dc.date.available2015-08-04T07:01:01Z
dc.date.issued2011-10
dc.identifier.citationUseinov, A., & Kosel, J. (2011). Spin Asymmetry Calculations of the $TMR\hbox{-}V$ Curves in Single and Double-Barrier Magnetic Tunnel Junctions. IEEE Transactions on Magnetics, 47(10), 2724–2727. doi:10.1109/tmag.2011.2153182
dc.identifier.issn00189464
dc.identifier.doi10.1109/TMAG.2011.2153182
dc.identifier.urihttp://hdl.handle.net/10754/564439
dc.description.abstractSpin-polarization asymmetry is the key parameter in asymmetric voltage behavior (AVB) of the tunnel magnetoresistance (TMR) in magnetic tunnel junctions. In this paper, we study the value of the TMR as a function of the applied voltage Va in the single as well as double barrier magnetic tunnel junctions (SMTJ & DMTJ, which are constructed from CoFeB/MgO interfaces) and numerically estimate the possible difference of the TMR-V a curves for negative and positive voltages in the homojunctions. As a result, we found that AVB may help to determine the exact values of Fermi wave vectors for minority and majority conducting spin sub-bands. Moreover, significant asymmetry of the experimental TMR-Va curves, which arises due to different annealing regimes, is explained by different heights of the tunnel barriers and values of the spin asymmetry. The numerical TMR-V a data are in good agreement with experimental ones. © 2011 IEEE.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectBallistic transport
dc.subjectmagnetic tunnel junction
dc.subjectspin polarized transport
dc.subjecttunnel magnetoresistance
dc.titleSpin asymmetry calculations of the TMR-V curves in single and double-barrier magnetic tunnel junctions
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSensing, Magnetism and Microsystems Lab
dc.identifier.journalIEEE Transactions on Magnetics
kaust.personUseinov, Arthur
kaust.personKosel, Jürgen


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