1. Department of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, 42122 Reggio Emilia, Italy
2. Interdepartmental Center for Research and Services in the Field of Hydrogen Production, Storage and Use H2 − MO.RE, Via Università 4, 41121 Modena, Italy
3. Centro Interdipartimentale En&Tech, 42122 Reggio Emilia, Italy
4. Department of Physics, University of Rome Tor Vergata, and INFN, Via della Ricerca Scientifica 1, I-00133 Rome, Italy
5. Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
6. Centro S3, Institute of Nanoscience ─ Italian National Research Council (CNR-NANO), via Campi 213/A, 41125 Modena, Italy