J.Wu , D. Yang, J.Liang, M.Werne, E. Ostroumov, Y. Xiao, K.Watanabe, T.Taniguchi, J. I. Dadap, D.Jones, Z.Ye ,, “Ultrafast response of spontaneous photovoltaic effect in 3R-MoS2–based heterostructures”, Sci. Adv. 8, eade3759 (2022)