Ultrafast charge doping via photothermionic injection in van der Waals devicesRemoveYiliu Li, Esteban Rojas-Gatjens, Yinjie Guo, Birui Yang, Dihao Sun, Luke Holtzman, Juseung Oh, Katayun Barmak, Cory R. Dean, James C. Hone, Nathaniel Gabor, Eric A. Arsenault, and Xiaoyang ZhuPhys. Rev. B 113, 195135 (2026)