1. Institut
für Angewandte Physik, Universität Tübingen, Tübingen 72076, Germany
2. Department
of Physics, Humboldt-Universität zu Berlin, Berlin 10099, Germany
3. Institute
of Physics, Experimental Physics IV, University of Augsburg, Augsburg 86135, Germany
4. Faculty
of Physics and Material Sciences Center, Philipps-Universität Marburg, Marburg 35037, Germany
5. Max
IV Laboratory, Lund University, Lund SE-221 00, Sweden
6. Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin 14109, Germany
7. Dresden Integrated Center for Applied Physics
and Photonic Materials
(IAPP), Technische Universität Dresden, Dresden 01062, Germany
8. European
Synchrotron Radiation Facility, Grenoble 38000, France