1. Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Departamento de Fisica e Astronomia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
2. Kavli Institute of Nanoscience, Delft University of Technology, Delft, The Netherlands
3. Institute of Magnetism NASU and MESU, Kyiv, Ukraine
4. Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore
5. Institute of Microelectronics, A*STAR, Singapore, Singapore
6. Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC, Madrid, Spain
7. Departamento de Polímeros y Materiales Avanzados, Universidad del País Vasco, UPV/EHU, San Sebastian, Spain
8. IKERBASQUE, the Basque Foundation for Science, Bilbao, Spain
9. Department of Physics, Durham University, Durham, UK