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arXiv · 1412.1281

Paramagnetic spin pumping

Y. Shiomi·E. Saitoh
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Abstract

We have demonstrated spin pumping from a paramagnetic state of an insulator La2NiMnO6 into a Pt film. Single-crystalline films of La2NiMnO6 which exhibit a ferromagnetic order at TC ~ 270 K were grown by pulsed laser deposition. The inverse spin Hall voltage induced by spin-current injection has been observed in the Pt layer not only in the ferromagnetic phase of La2NiMnO6 but also in a wide temperature range above TC. The efficient spin pumping in the paramagnetic phase is ascribable to ferromagnetic correlation, not to ferromagnetic order.

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Y. Shiomi, E. Saitoh. 2014-12-03. Paramagnetic spin pumping. https://doi.org/10.1103/physrevlett.113.266602

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