1. Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland.
2. Institute of Low Temperatures and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wrocław, Poland.
3. Institute of Electronics and Information Technology, Lublin University of Technology, Nadbystrzycka 38A, 20-618 Lublin, Poland.
4. Institute of Physics, Maria Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland.