Hübener Hannes, De Giovannini Umberto, Schäfer Christian, Andberger Johan, Ruggenthaler Michael, Faist Jerome, Rubio Angel
Max Planck Institute for the Structure and Dynamics of Matter and Center for Free Electron Laser Science, Hamburg, Germany.
ETH Zürich, Institute of Quantum Electronics, Zürich, Switzerland.
Nat Mater. 2021 Apr;20(4):438-442. doi: 10.1038/s41563-020-00801-7.