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arXiv · 1304.5890

Giant enhancement of spin pumping efficiency using Fe3Si ferromagnet

Y. Ando·K. Ichiba·S. Yamada·E. Shikoh·T. Shinjo·K. Hamaya·M. Shiraishi
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Abstract

Spincurrentronics, which involves the generation, propagation and control of spin currents, has attracted a great deal of attention because of the possibility of realizing dissipation-free information propagation. Whereas electrical generation of spin currents originally made the field of spincurrentronics possible, and significant advances in spin-current devices has been made, novel spin-current-generation approaches such as dynamical methods have also been vigorously investigated. However, the low spin-current generation efficiency associated with dynamical methods has impeded further progress towards practical spin devices. Here we show that by introducing a Heusler-type ferromagnetic material, Fe3Si, pure spin currents can be generated about twenty times more efficiently using a dynamical method. This achievement paves the way to the development of novel spin-based devices.

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Y. Ando, K. Ichiba, S. Yamada, E. Shikoh, T. Shinjo, K. Hamaya, M. Shiraishi. 2013-04-22. Giant enhancement of spin pumping efficiency using Fe3Si ferromagnet. https://doi.org/10.1103/physrevb.88.140406

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