Spin Hall effect and spin absorption in ferromagnetic materials

Maxen Cosset-Cheneau; Sara Varotto; Paul Noël; Cécile Grèzes; Van Tuong Pham; Yu Fu; Patrick Warin; Ariel Brenac; Vincent Baltz; Alain Marty; Serge Gambarelli; Jean-François Jacquot; Daria Gusakova; Xavier Waintal; Henri Jaffrès; Jean-Philippe Attané; Laurent Vila

doi:10.1117/12.2594618

1 August 2021 Spin Hall effect and spin absorption in ferromagnetic materials

Maxen Cosset-Cheneau, Sara Varotto, Paul Noël, Cécile Grèzes, Van Tuong Pham, Yu Fu, Patrick Warin, Ariel Brenac, Vincent Baltz, Alain Marty, Serge Gambarelli, Jean-François Jacquot, Daria Gusakova, Xavier Waintal, Henri Jaffrès, Jean-Philippe Attané, Laurent Vila

Author Affiliations +

Proceedings Volume 11805, Spintronics XIV; 1180505 (2021) https://doi.org/10.1117/12.2594618
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

The link between magnetization and Spin Hall Effect (SHE) has remained mostly unclear for now. In a first part of this contribution, we study oh the presence of the magnetization affect the SHE, by performing in the weak ferromagnet NiCu Spin Pumping-FMR measurements across the ferromagnetic / paramagnetic critical temperature. We show that the high spin Hall effects which can be obtained in 3d ferromagnets seems to be independent of the magnetic phase. In a second part, we show that the spin absorption process in a ferromagnetic material depends on the spin orientation relative to the magnetization. Using a ferromagnet to absorb the pure spin current created within a lateral spin valve, we evidence and quantify a sizable orientation dependence of the spin absorption in Co, CoFe, and NiFe. These experiments allow us to determine the spin-mixing conductance, an elusive but fundamental parameter of the spin-dependent transport.

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Maxen Cosset-Cheneau, Sara Varotto, Paul Noël, Cécile Grèzes, Van Tuong Pham, Yu Fu, Patrick Warin, Ariel Brenac, Vincent Baltz, Alain Marty, Serge Gambarelli, Jean-François Jacquot, Daria Gusakova, Xavier Waintal, Henri Jaffrès, Jean-Philippe Attané, and Laurent Vila "Spin Hall effect and spin absorption in ferromagnetic materials", Proc. SPIE 11805, Spintronics XIV, 1180505 (1 August 2021); https://doi.org/10.1117/12.2594618

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