Experiments were performed at the CIRCE beamline at ALBA Synchrotron with the collaboration of ALBA staff. M.K. acknowledges support from the Graduate School of Excellence Materials Science in Mainz (MAINZ) DFG 266, the DAAD (Spintronics network, Project No. 57334897). We acknowledge that this work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—TRR 173-268565370 (Projects A01 and B02). This project has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 863155 (s-Nebula). A.R. and B.B. acknowledge funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 860060 (ITN MagnEFi). This work is also supported by ERATO “Spin Quantum Rectification Project” (Grant No. JPMJER1402) and the Grant-in-Aid for Scientific Research on Innovative Area, “Nano Spin Conversion Science” (Grant No. JP26103005), Grant-in-Aid for Scientific Research (S) (Grant No. JP19H05600), Grant-in-Aid for Scientific Research (C) (Grant No. JP20K05297) from JSPS KAKENHI. R.R. also acknowledges support from the Grant RYC 2019-026915-I and the Project TED2021-130930B-I00 funded by the MCIN/AEI/10.13039/501100011033 and by the ESF investing in your future and the European Union NextGenerationEU/PRTR, the Xunta de Galicia (ED431F 2022/04, ED431B 2021/013, Centro Singular de Investigación de Galicia Accreditation 2019-2022, ED431G 2019/03) and the European Union (European Regional Development Fund - ERDF).