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.
@article{arxiv.2007.14058,
title = {Measurement of the Spin Absorption Anisotropy in Lateral Spin Valves},
author = {Maxen Cosset-Chéneau and Laurent Vila and Gilles Zahnd and Daria Gusakova and Van Tuong Pham and Cécile Grèzes and Xavier Waintal and Alain Marty and Henri Jaffrès and Jean-Philippe Attané},
journal= {arXiv preprint arXiv:2007.14058},
year = {2021}
}