Three-photon photoemission on metallic transition metal dichalcogenide NiTe${}_2$

Cheng-Tien Chiang, Mukesh Singh, Yu-Jhen Chuang +6

Three-photon photoemission (3PPE) signals on NiTe${}_2$ are observed for the first time upon ultraviolet excitations. In the energy range beyond two-photon excitations, an energy-m…