Electron Spectroscopy Studies of Cuprate and Bismuthate Superconductors
The electronic structure of the cuprate superconductors Bi(2)Sr(2)CaCu(2)O(8) and Bi(2)Sr(2)CuO(6) and the bismuthate superconductor Ba(0.6)K(0.4)BiO(3), as well as semiconducting Ba(0.9)K(0.1)BiO(3), have been studied by electron spectroscopy techniques. The intention has been to investigate fundamental properties of the metallic state such as the importance of strong electron correlations. In ad