[8a-Z15-1~6] Optical functions of thin films studied by various quantum beams

[8a-Z15-4] Real-space imaging of ultrafast electron dynamics using time resolved STM

〇Shoji Yoshida¹ (1.Univ. of Tsukuba)

Keywords:ultrafast dynamics, Scanning Tunneling Microscopy, terahertz

Recently, THz-STM has attracted much attention as a novel technique to probe ultrafast dynamics of photo-induced phenomena with atomic-scale spatial resolution. Free space coupling of THz pulses to STM tunneling junction induces a sub-ps transient voltage across the junction, which drives ultrafast tunneling current. In this study, we have utilized THz driven ultrafast tunneling current to capture the sub-ps snapshot of free electrons in an organic thin film with a spatial resolution less than 1 nm.