Observation of Spin-Charge Separation in One-Dimensional SrCuO2

著者: C. Kim, A. Y. Matsuura, Zhi‐Xun Shen, N. Motoyama, Hiroshi Eisaki, S. Uchida, Takami Tohyama, Sadamichi Maekawa - Physical Review Letters 1996 被引用: 394

Angle-resolved photoemission data from one-dimensional SrCu${\mathrm{O}}_{2}$ compounds are found to be qualitatively different from that of two-dimensional S${\mathrm{r}}_{2}$Cu${\mathrm{O}}_{2}$C${\mathrm{l}}_{2}$. The data can be quantitatively accounted for by the exact diagonalization calculation based on the t-J model. We identify the two underlying bands having approximately 1.2 and 0.3 eV energy dispersion as that of holon and spinon, with their energy scaled by t and J, respectively.