1. Departament de Física, Universitat Autònoma de Barcelona, E-08193 Cerdanyola del Vallès, Spain
2. Institute of Radiation Physics, Helmholtz-Center Dresden-Rossendorf, Dresden 01328, Germany
3. LENS-MIND, Departament d’Enginyeria Electrònica i Biomèdica, Universitat de Barcelona, 08028 Barcelona, Spain
4. Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
5. Department of Solid State Sciences, CoCooN, Ghent University, Krijgslaan 281/S1, 9000 Ghent, Belgium
6. Physics Department, University of California, Davis, California 95616, United States
7. NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
8. Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
9. Department of Physics, Georgetown University, Washington, D.C. 20057, United States
10. Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, E-08193 Barcelona, Spain
11. Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, E-08010 Barcelona, Spain