1. Center for Hybrid Nanostructures (CHyN), Universität Hamburg, 22761 Hamburg, Germany
2. Materials Science and Engineering Department, University of Utah, Salt Lake City, 84112 Utah, United States
3. Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
4. The Hamburg Centre for Ultrafast Imaging CUI, 22761 Hamburg, Germany
5. Materials Science and Engineering, College of Engineering, University of Wisconsin–Madison, Madison, 53706 Wisconsin, United States