1 Max Planck Institute for the Structure and Dynamics of Matter and Center for Free-Electron Laser Science, Hamburg 22761, Germany. Electronic address: hannes.huebener@gmail.com.
2 Max Planck Institute for the Structure and Dynamics of Matter and Center for Free-Electron Laser Science, Hamburg 22761, Germany; Università degli Studi di Palermo, Dipartimento di Fisica e Chimica-Emilio Segrè, Palermo I-90123, Italy.
3 Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8577, Japan; Max Planck Institute for the Structure and Dynamics of Matter and Center for Free-Electron Laser Science, Hamburg 22761, Germany.
4 Max Planck Institute for the Structure and Dynamics of Matter and Center for Free-Electron Laser Science, Hamburg 22761, Germany; Center for Computational Quantum Physics (CCQ), The Flatiron Institute, New York NY 10010, USA. Electronic address: angel.rubio@mpsd.mpg.de.