1. Peter Grünberg
Institute 9 (PGI 9) and JARA-Fundamentals of Future Information Technologies, Forschungszentrum Juelich, 52425 Juelich, Germany
2. National Institute of Materials Physics, P.O. Box MG-7, Magurele, Bucharest 077125, Romania
3. Institute of Microwaves
and Photonics, School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
4. University of Grenoble Alpes, F-38000
and CEA, LETI, MINATEC Campus, F-38054 Grenoble, France