测量了REBa_2Cu_3O_7-δ(RE=Sm、Eu、Gd、Dy、Ho、Y)单相氧化物超导体各元素的室温XPS特征峰,低温下YBa_2Cu_3O_7-δ的XPS,R-T曲线和晶格参数。对所有化合物,从XPS上没有直接观察到Cu~(3+)。室温研究结果表明,E_f处的强度很低,具有磁性稀土离子的置换对超导体E_f处的强度影响不大。YBa_2Cu_3O_7-δ的低温XPS测量进一步表明,对超导体电子结构起重要作用的是氧配位体上的空穴。 The XPS, R-T curves and lattice parameters of YBa_2Cu_3O_7-δ at low temperature were measured at room temperature for each element of single-phase oxide superconductor REBa_2Cu_3O_7-δ (RE = Sm, Eu, Gd, Dy, Ho, Y) For all compounds, Cu ~ (3+) was not directly observed from XPS. The results of room temperature study show that the intensity at E_f is very low, and the substitution with magnetic rare earth ions has little effect on the strength of superconductor E_f. The low temperature XPS measurements of YBa_2Cu_3O_7-δ further suggest that holes on oxygen ligands play an important role in the electronic structure of the superconductor.