Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments oleh Sascha Keller, Laura Mihalceanu, Matthias R Schweizer, Philipp Lang, Björn Heinz, Moritz Geilen, Thomas Brächer, Philipp Pirro, Thomas Meyer, Andres Conca, Dimitrios Karfaridis, George Vourlias, Thomas Kehagias, Burkard Hillebrands, Evangelos Th Papaioannou