4 Department of Physics and Astronomy, Uppsala University, Box 516, 751 20, Uppsala, Sweden.
5 Department of Materials Science, University of California, Berkeley, CA, 94720, USA.
6 Department of Physics, Stockholm University, AlbaNova University Center, 114 21, Stockholm, Sweden.
7 The Max Planck Institute for the Physics of Complex Systems, 01187, Dresden, Germany.
8 Department of Theoretical Physics, Institute of Physics, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111, Budapest, Hungary.
9 IFW Dresden and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtzstrasse 20, 01069, Dresden, Germany.
10 Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
11 Department of Physics, University of California, Berkeley, CA, 94720, USA. ale.lanzara@berkeley.edu.
12 Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA. ale.lanzara@berkeley.edu.