Acknowledgments
We acknowledge the support of the beamline and research performed at the Coherence application beamline P10 at PETRA III by Edgar Weckert and Gerhard Grübel from DESY. We acknowledge the work of Ph.D. students and postdocs who were and are working in the Coherent Scattering group of DESY Photon Science; without their dedicated work, it would not be possible to obtain these results. We also acknowledge long-term collaboration with different colleagues—namely, A.P. Petukhov, L. Samuelson, A. Mikkelsen, M. Scheele, and F. Schreiber—since, without their support, this research would not be possible. We are thankful to W. Laasch and J. Carnis for a careful reading of the manuscript.