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Phys Rev Lett. 2012 Sep 7;109(10):107204. Epub 2012 Sep 7.

Transport magnetic proximity effects in platinum.

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Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA.


Platinum (Pt) metal, being nonmagnetic and with a strong spin-orbit coupling interaction, has been central in detecting the pure spin current and establishing most of the recent spin-based phenomena. Magnetotransport measurements, both electrical and thermal, conclusively show strong ferromagnetic characteristics in thin Pt films on the ferromagnetic insulator due to the magnetic proximity effects. The pure spin current phenomena measured by Pt, including the inverse spin Hall and the spin Seebeck effects, are thus contaminated and not exclusively established.

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