1. Scuola Superiore Meridionale (SSM), University of Naples Federico II, Largo S. Marcellino, 10, 80138, Italy
2. Department of Physics “E. Pancini”, University of Naples Federico II, Via Cintia 26, 80126, Naples, Italy
3. CNR-SPIN (Institute for Superconductors, Oxides and Other Innovative Materials and Devices), Piazzale V. Tecchio 80, 80125, Naples, Italy