1. Investigations of interface spin asymmetry and interfacial resistance in FexCo100-x/Ag interface.
- Author
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Jung, J. W., Jin, Z., Shiokawa, Y., and Sahashi, M.
- Subjects
INTERFACIAL friction ,MAGNETORESISTANCE ,ELECTRICAL resistivity ,ELECTRIC resistance ,MAGNETIC fields - Abstract
We investigated current-perpendicular-to-plane (CPP) magnetotransport parameters of Fe
x Co100-x / Ag interfaces: interface specific resistance (ARF/N ), extended interface resistance (AR*F/N ), and spin scattering asymmetry (γ). We also investigated the dependence of interfacial parameters on the giant magnetoresistance effect with CPP geometry. For measuring these parameters, we prepared magnetic multilayers and pseudo spin valves (PSVs), combining the ferromagnetic (F) alloys Fe, Co, Fe50 Co50 , and Fe30 Co70 with the nonmagnetic (N) metal Ag. In all cases, the largest ARF/N value was found to be ~0.68 mΩμm² with an enhanced AR* F/N value of ~1.9 mΩμm² for a (001)-oriented Fe/Ag interface, which suggests that spin-up and spin-down electrons on the Fermi surface have very different transmission probabilities. Such an interface can act as a spin filter through which only one type of electrons can pass. [ABSTRACT FROM AUTHOR]- Published
- 2015
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