1. Department of Chemistry—Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
2. Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
3. Université Grenoble-Alpes, CEA-LITEN, 17 avenue des Martyrs, 38054 Grenoble Cedex 9, France
4. Helmholtz Institute Ulm, Helmholtzstraße 11, 89081 Ulm, Germany
5. Institute of Nanotechnology, Karlsruhe Institute of Technology, Box 3640, 76021 Karlsruhe, Germany