Magnetic Properties of Interfaces and Magnetoresistance in Multilayers
Recent studies of the peculiar magnetoresistance (MR) properties of multilayers are surveyed. Due to the spin-dependent scattering mechanism, resistance of a multilayer increases remarkably if the magnetic components are oriented antiparallel, in comparison with the parallel (ferromagnetic) case. Such a situation is realized in Fe/Cr multilayers because of the interlayer exchange coupling, and in Cu/Co/Cu/Ni(Fe) multilayers because of the difference of anisotropy. Accordingly, large MR changes are induced in both cases. The role of the interfaces is certainly crucial to this effect, but is not yet well understood.
KeywordsAnisotropy GaAs Parkin Ferro Carbone
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