2011•International Journal of Modern Physics BRequires access

AMPLIFICATION OF CURRENT SPIN POLARIZATION IN FERROMAGNETIC/ORGANIC SYSTEM WITH SPIN-RELATED INTERFACIAL RESISTANCES

MINGXIA XIU, Junfeng Ren, Chuan‐Kui Wang, Xiaobo Yuan, Guichao Hu

Abstract

Current spin polarization in ferromagnetic/organic system is theoretically studied based on the spin diffusion theory and Ohm's law, and the effects of the spin-related interfacial resistances on the spin-polarized injection are discussed. It is shown that the current spin polarization can be higher than the spin polarization of the ferromagnetic contact and may reach 100% at the interface by modulating the spin-related interfacial resistances. The proposed amplification scheme provides an efficient way to generate a highly spin-polarized current in organic materials because of the easy fabrication of ordered spin-related tunnel barriers at contact structures.

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Key concepts: Spin polarization, Condensed matter physics, Spin diffusion, Spinplasmonics, Ferromagnetism, Spin Hall effect, Materials science, Spin (aerodynamics)