Disorder Effects in the Bipolaron System Ti${}_4$O${}_7$ Studied by Photoemission Spectroscopy

K. Kobayashi, T. Susaki, A. Fujimori +2

We have performed a photoemission study of Ti${}_4$O${}_7$ around its two transition temperatures so as to cover the metallic, high-temperature insulating (bipolaron-liquid), and l…