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Independence of the inverse spin Hall effect with the magnetic phase in thin NiCu films

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arxiv 2005.08066 v1 pith:AHIJS3GU submitted 2020-05-16 cond-mat.mtrl-sci

Sara Varotto , Maxen Cosset-Cheneau , Cécile Grezes , Yu Fu , Patrick Warin , Ariel Brenac , Jean-François Jacquot , Serge Gambarelli
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Christian Rinaldi Vincent Baltz Jean-Philippe Attané Laurent Vila Paul Noël
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classification cond-mat.mtrl-sci
keywords spinhalleffectinversemagneticferromagnetslargeorder
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Large spin Hall angles have been observed in 3d ferromagnets, but their origin, and especially their link with the ferromagnetic order, remain unclear. Here, we investigate the inverse spin Hall effect of Ni60Cu40 and Ni50Cu50 across their Curie temperature using spin pumping experiments. We evidence that the inverse spin Hall effect in these samples is comparable to that of platinum, and that it is insensitive to the magnetic order. These results points towards a Heisenberg localized model of the transition, and suggest that the large spin Hall effects in 3d ferromagnets can be independent of the magnetic phase.

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