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Absence of magnetic proximity effects in magnetoresistive Pt/CoFe2O4 hybrid interfaces

M. Valvidares, N. Dix, M. Isasa, K. Ollefs, F. Wilhelm, A. Rogalev, F. Sánchez, E. Pellegrin, A. Bedoya-Pinto, P. Gargiani, L. E. Hueso, F. Casanova, and J. Fontcuberta. Phys. Rev. B 93, 214415. DOI: Phys Rev B.93.214415

• Pure spin currents and spin accumulation and consequently  magnetism, can be induced in non magnetic materials just by a flow on a non spin-polarized charge  current (Spin Hall effect). However, magnetism in some non-magnetic materials can also been induced by proximity effect by neighboring magnetic layers.
• Here we show that in Pt/CoFe2O4 hybrid systems, spin currents are generated in absence of any proximity-induced magnetic moments in Platinum.

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