Doping of a One-Dimensional Mott Insulator: Photoemision and Optical Studies of Sr${}_2$CuO${}_{3+\delta }$

T. Valla, T. E. Kidd, P. D. Johnson +3

The spectral properties of a one-dimensional (1D) single-chain Mott insulator Sr${}_2$CuO${}_3$ have been studied in angle-resolved photoemission and optical spectroscopy, at half fi…