Externally-triggerable optical pump-probe scanning tunneling microscopy with a time resoloution of tens-picosecond. - Iwaya, Katsuya; Yokota, Munenori; Hanada, Hiroaki; Mogi, Hiroyuki; Yoshida, Shoji; Takeuchi, Osamu; Miyatake, Yutaka; Shigekawa, Hidemi (Scientific Reports, 2023)