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arXiv · 2007.14058

Measurement of the Spin Absorption Anisotropy in Lateral Spin Valves

Maxen Cosset-Chéneau·Laurent Vila·Gilles Zahnd·Daria Gusakova·Van Tuong Pham·Cécile Grèzes·Xavier Waintal·Alain Marty·Henri Jaffrès·Jean-Philippe Attané
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Abstract

The spin absorption process in a ferromagnetic material depends on the spin orientation relativelyto the magnetization. Using a ferromagnet to absorb the pure spin current created within a lateralspin-valve, we evidence and quantify a sizeable orientation dependence of the spin absorption inCo, CoFe and NiFe. These experiments allow determining the spin-mixing conductance, an elusivebut fundamental parameter of the spin-dependent transport. We show that the obtained valuescannot be understood within a model considering only the Larmor, transverse decoherence and spindiffusion lengths, and rather suggest that the spin-mixing conductance is actually limited by theSharvin conductance.

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Maxen Cosset-Chéneau, Laurent Vila, Gilles Zahnd, Daria Gusakova, Van Tuong Pham, Cécile Grèzes, Xavier Waintal, Alain Marty, Henri Jaffrès, Jean-Philippe Attané. 2020-07-28. Measurement of the Spin Absorption Anisotropy in Lateral Spin Valves. https://doi.org/10.1103/physrevlett.126.027201

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