%0 Journal Article
%A Ruiz Gómez, Sandra
%A Guerrero, Rubén
%A Khaliq, Muhammad W
%A Fernández González, Claudia
%A Prat, Jordi
%A Valera, Andrés
%A Finizio, Simone
%A Perna, Paolo
%A Camarero, Julio
%A Pérez García, Lucas
%A Aballe, Lucía
%A Foerster, Michael
%T Direct x-ray detection of the spin hall effect in CuBi
%D 2022
%@ 2160-3308
%U https://hdl.handle.net/20.500.14352/72108
%X The spin Hall effect and the inverse spin Hall effect are important spin-charge conversion mechanisms. The direct spin Hall effect induces a surface spin accumulation from a transverse charge current due to spin-orbit coupling even in nonmagnetic conductors. However, most detection schemes involve additional interfaces, leading to large scattering in reported data. Here we perform interface-free x-ray spectroscopy measurements at the Cu L_(3;2) absorption edges of highly Bi-doped Cu (Cu_(95)Bi_5). The detected x-ray magnetic circular dichroism signal corresponds to an induced magnetic moment of (2.2 + 0.5) x 10^(-12) mu(B) A^(-1) cm^(2) per Cu atom averaged over the probing depth, which is of the same order of magnitude as found for Pt measured by magneto-optics. The results highlight the importance of interface-free measurements to assess material parameters and the potential of CuBi for spin-charge conversion applications.
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