1. Institute
of Experimental Physics, Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093 Warsaw, Poland
2. CNRS, Institut Néel, “Nanophysique et semiconducteurs” group, F-38000 Grenoble, France
3. Universite Grenoble Alpes, F-38000 Grenoble, France
4. Biological
and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland