1. John Jasper Bekx, Sang-Kil Son, Beata Ziaja, and Robin Santra, “Electronic-structure calculations for nonisothermal warm dense matter,” Phys. Rev. Res. 2, 033061 (2020).
2. John Jasper Bekx, Sang-Kil Son, Robin Santra, and Beata Ziaja, “Ab-initio description of electronic states in matter excited with ultrashort intense X-ray pulses - Preliminary Results” in European XFEL and DESY Photon Science Users' Meeting (DESY, Hamburg, Germany, January 29-31, 2020).
3. Yoshiaki Kumagai, Zoltan Jurek, Weiqing Xu, Hironobu Fukuzawa, Koji Motomura, Denys Iablonskyi, Kiyonobu Nagaya, Shin-ichi Wada, Subhendu Mondal, Tetsuya Tachibana, Yuta Ito, Tsukasa Sakai, Kenji Matsunami, Toshiyuki Nishiyama, Takayuki Umemoto, Christophe Nicolas, Catalin Miron, Tadashi Togashi, Kanade Ogawa, Shigeki Owada, Kensuke Tono, Makina Yabashi, Sang-Kil Son, Beata Ziaja, Robin Santra, and Kiyoshi Ueda, “Real-time observation of disintegration processes within argon clusters ionized by a hard-x-ray pulse of moderate fluence,” Phys. Rev. A 101, 023412 (2020).
4. Sang-Kil Son, Rebecca Boll, and Robin Santra, “Breakdown of frustrated absorption in x-ray sequential multiphoton ionization,” Phys. Rev. Res. 2, 023053 (2020).
5. Sang-Kil Son, “Breakdown of frustrated absorption in x-ray sequential multiphoton ionization” in CFEL-DESY Theory Seminar (CFEL, DESY, Hamburg, Germany, April 1, 2020) [oral presentation].
6. Sang-Kil Son, “Theory of X-ray–matter interactions” in Ultrafast X-ray Summer School (PULSE, Stanford, California, United States, June 15-22, 2020) [lecture].
7. Andrea Trabattoni, Joss Wiese, Umberto De Giovannini, Jean-François Olivieri, Terry Mullins, Jolijn Onvlee, Sang-Kil Son, Biagio Frusteri, Angel Rubio, Sebastian Trippel, and Jochen Küpper, “Setting the photoelectron clock through molecular alignment,” Nat. Commun. 11, 2546 (2020).
8. Sebastian Günther, Patrick Y.A. Reinke, Dominik Oberthuer, Oleksandr Yefanov, Helen Ginn, Susanne Meier, Thomas J. Lane, Kristina Lorenzen, Luca Gelisio, Wolfgang Brehm, Illona Dunkel, Martin Domaracky, Sofiane Saouane, Julia Lieske, Christiane Ehrt, Faisal Koua, Alexandra Tolstikova, Thomas A. White, Michael Groessler, Holger Fleckenstein, Fabian Trost, Marina Galchenkova, Yaroslav Gevorkov, Chufeng Li, Salah Awel, Ariana Peck, Lourdu P. Xavier, Miriam Barthelmess, Frank Schlünzen, Nadine Werner, Hina Andaleeb, Najeeb Ullah, Sven Falke, Bruno Alves Franca, Martin Schwinzer, Hévila Brognaro, Brandon Seychell, Henry Gieseler, Diogo Melo, Jo J. Zaitsev-Doyle, Brenna Norton-Baker, Juraj Knoska, Gisel Esperanza, Aida Rahmani Mashhour, Filip Guicking, Vincent Hennicke, Pontus Fischer, Cromarte Rogers, Diana C.F. Monteiro, Johanna Hakanpää, Jan Meyer, Heshmat Noei, Phil Gribbon, Bernhard Ellinger, Maria Kuzikov, Markus Wolf, Linlin Zhang, Xinyuanyuan Sun, Jonathan Pletzer-Zelgert, Jan Wollenhaupt, Christian Feiler, Manfred Weiss, Eike-Christian Schulz, Pedram Mehrabi, Christina Schmidt, Robin Schubert, Huijong Han, Boris Krichel, Yaiza Fernández-García, Beatriz Escudero-Pérez, Stephan Günther, Dusan Turk, Charlotte Uetrecht, Tobias Beck, Henning Tidow, Ashwin Chari, Andrea Zaliani, Matthias Rarey, Russell Cox, Rolf Hilgenfeld, Henry N. Chapman, Arwen R. Pearson, Christian Betzel, and Alke Meents, “Catalytic cleavage of HEAT and subsequent covalent binding of the tetralone moiety by the SARS-CoV-2 main protease,” (preprint, 2020).