1. Interdisciplinary Laboratories for Advanced Materials Physics (i-LAMP), Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, Via della Garzetta 46, 25133Brescia, Italy
2. INSTM, UdR of Brescia, via Branze 38, 25123Brescia, Italy
3. Department of Information Engineering (DII), University of Brescia, via Branze 38, 25123Brescia, Italy
4. INO-CNR, via Branze 38, 25123Brescia, Italy
5. Department of Civil, Environmental, Architectural Engineering and Mathematics (DICATAM), Università degli Studi di Brescia, Via Branze, 43, 25123Brescia, Italy
6. CNR-IMM Bologna, via Gobetti 101, 40129Bologna, Italy
7. Electron Microscopy Facility, Istituto Italiano di Tecnologia, via Morego 30, 16163Genova, Italy