1. Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
2. Istituto Officina dei Materiali del CNR (CNR-IOM), Sede Secondaria di Perugia, c/o Dipartimento di Fisica e Geologia, Università di Perugia, I-06123 Perugia, Italy
3. Departamento de Física, Facultad de Ciencias, Universidad de Oviedo, C/Federico García Lorca no 18, 33007 Oviedo, Spain
4. Centro de Investigación en Nanomateriales y Nanotecnología (CINN), CSIC-Universidad de Oviedo, 33940 El Entrego, Spain
5. Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
6. Université Paris-Saclay, UVSQ, CNRS, GEMaC, 78000 Versailles, France
7. Dipartimento di Fisica e Geologia, Università di Perugia, I-06123 Perugia, Italy