1. Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30172 Venice, Italy
2. Institut für Theoretische Physik und Astrophysik and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, 97074 Würzburg, Germany
3. School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, United Kingdom
4. Elettra Sincrotrone Trieste S.C.p.A. S. S. 14, km 163.5, 34149 Trieste, Italy
5. Università degli studi di Trieste Via A. Valerio 2, 34127 Trieste, Italy
6. Forschungszentrum Juelich GmBH PGI-6Leo Brandt Strasse, 52425 Juelich, Germany
7. Department of Physics, University of Arizona, Tucson, Arizona 85721, United States
8. Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, Trieste I-34149, Italy
9. Dipartimento di Fisica Universitá di Milano, Via Celoria 16, Milano 20133, Italy
10. Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
11. Department of Physics and Astronomy, University of Bologna, 40127 Bologna, Italy
12. Center for Computational Quantum Physics, Flatiron Institute, 162 5th Avenue, New York, New York 10010, United States