1. Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
2. Extreme Light Infrastructure Attosecond Light Pulse Source, ELI-HU Non-Profit Ltd., Dugonics ter 13, Szeged 6720, Hungary.
3. Attosecond Science Group, Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, D-22607 Hamburg, Germany.
4. Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
5. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
6. Max-Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Straße 2A, D-12489 Berlin, Germany.
7. Technische Universität Berlin, Ernst-Ruska-Gebäude, Hardenbergstr. 36 A, 10623 Berlin, Germany.
8. Department of Physics, Imperial College London, South Kensington Campus, SW72AZ London, UK.
9. Institute of Physics, Humboldt University Berlin, Newtonstrasse 15, 12489 Berlin, Germany.
10. Institute for Advanced Research in Chemical Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
11. Instituto Madrileño de Estudios Avanzados en Nanociencia, Cantoblanco, 28049 Madrid, Spain.
12. Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain.