1. Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093 Warsaw, Poland
2. International Research Centre Magtop, Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
3. Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668, Warsaw, Poland
4. Center for Science and Innovation in Spintronics, Tohoku University, Sendai 980-8577, Japan