Казанский (Приволжский) федеральный университет, КФУ
КАЗАНСКИЙ
ФЕДЕРАЛЬНЫЙ УНИВЕРСИТЕТ
 
TUNNEL MAGNETORESISTANCE IN MAGNETIC TUNNEL JUNCTIONS WITH EMBEDDED NANOPARTICLES
Форма представленияСтатьи в зарубежных журналах и сборниках
Год публикации2015
Языкрусский
  • Усеинов Артур Ниазбекович, автор
  • Усеинов Ниазбек Хамзович, автор
  • Lai C. H., автор
  • Библиографическое описание на языке оригинала Useinov, A.N. Tunnel Magnetoresistance in Magnetic Tunnel Junctions With Embedded Nanoparticles / A.N. Useinov, N.K. Useinov, L.-Xe. Ye, T.-H. Wu, C.-H. Lai // IEEE Transactions on Magnetics. - 2015. 51, Issue: 11 Article #: 4401404, DOI: 10.1109/TMAG.2015.2451705.
    Аннотация In this paper, we attempt the theoretical modeling of the magnetic tunnel junctions with embedded magnetic and nonmagnetic nanoparticles (NPs). A few abnormal tunnel magnetoresistance (TMR) effects, observed in related experiments, can be easily simulated within our model: we found, that the suppressed TMR magnitudes and the TMR sign-reversing effect at small voltages are related to the electron momentum states of the NP located inside the insulating layer. All these TMR behaviors can be explained within the tunneling model, where NP is simulated as a quantum well (QW). The coherent double barrier tunneling is dominating over the single barrier one. The origin of the TMR suppression is the quantized angle transparency for spin polarized electrons being in one of the lowest QW states. The phenomenon was classified as the quantized conductance regime due to restricted geometry.
    Ключевые слова Ballistic transport, magnetic tunnel junctions, nanoparticles, tunnel magnetoresistance.
    Название журнала IEEE Transactions on Magnetics
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