Terahertz conductivity of localized photoinduced carriers in Mott insulator YTiO${}_3$ at low excitation density, contrasted with metallic nature in band semiconductor Si

J. Kitagawa, Y. Kadoya, M. Tsubota +2

We performed optical-pump terahertz-probe measurements of a Mott insulator YTiO${}_3$ and a band semiconductor Si using a laser diode (1.47 eV) and a femtosecond pulse laser (1.55…