1. Institute of Physics of Advanced Materials, Nanotechnology and Nanophotonics (IFIMUP), Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
2. Institute of Material Science, Technical University of Darmstadt, 64287 Darmstadt, Germany
3. Department of Physics and CICECO, University of Aveiro, Universitary Campus of Santiago, 3810-193 Aveiro, Portugal
4. Department of Physics, City University of Hong Kong, Kowloon 999077 Hong Kong, China
5. X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
6. Department of Chemistry, Durham University, South Road, Durham DH1 3LE, United Kingdom