1Istituto Officina dei Materiali (IOM)-CNR, Laboratorio TASC, in Area Science Park, S.S.14, Km 163.5, I-34149 Trieste, Italy
2International Centre for Theoretical Physics (ICTP), Strada Costiera 11, I-34100 Trieste, Italy
3Consiglio Nazionale delle Ricerche—CNR-SPIN, I-67100 L’Aquila, Italy
4Department of Physical and Chemical Sciences, University of L’Aquila, Via Vetoio, I-67100 L’Aquila, Italy
5Hiroshima Synchrotron Radiation Center (HSRC), Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima, 739-0046 Japan
6Joseph Henry Laboratories and Department of Physics, Princeton University, Princeton, New Jersey 08544 USA
7Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973 USA
8Dipartimento di Fisica, Università di Milano, Via Celoria 16, I-20133 Milano, Italy
9Department of Chemistry, Princeton University, Princeton, New Jersey 08544 USA
© The Author(s) 2019
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