1. Istituto di Struttura della Materia-CNR (ISM-CNR), Via del Fosso del Cavaliere, 00133 Roma, Italy
2. Dipartimento di Fisica, Università di Roma “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Roma, Italy
3. Institut für Theoretische Physik and Center for Materials Research, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 16, 35392 Gießen, Germany
4. Istituto di Struttura della Materia-CNR (ISM-CNR), S.S. 14, km 163.5, I-34149 Trieste, Italy
5. Dipartimento di Fisica, Università della Calabria, Via P.Bucci, 87036 Arcavacata di Rende (CS), Italy
6. Azerbaijan State Oil and Industry University, AZ1010 Baku, Azerbaijan
7. Institute of Catalysis and Inorganic Chemistry, Azerbaijan National Academy of Science, AZ1143 Baku, Azerbaijan
8. Departamento de Física de Materiales, Facultad de Ciencias Químicas, UPV/EHU, and Centro de Física de Materiales, CFM-MPC, CSIC-UPV/EHU, Apdo. 1072, 20080 San Sebástian/Donostia, Basque Country, Spain
9. Saint Petersburg State University, 198504 Saint Petersburg, Russia
10. Donostia International Physics Center (DIPC), P. de Manuel Lardizabal 4, 20018 San Sebastián, Basque Country, Spain