Photoemission spectroscopic study of copper-oxide superconductors and related materials

✍ Scribed by H. Eisaki; T. Ido; H. Takagi; S. Uchida; T. Mizokawa; H. Namatame; A. Fujimori; Y. Tokura; J. van Elp; P. Kuiper; G.A. Sawatzky; S. Hosoya; H. Katayama-Yoshida; K. Oka; H. Unoki

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 371 KB
• Volume: 165-166
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/s0921-4526(09)80198-1

✦ Synopsis

The electronic structure of high-Tc superconductors and related materials is studied by photoemission spectroscopy and Bremsstrahlung Isochromat spectroscopy. In the solid solution (La,SrhCu04' (Nd,CehCu04' and (La,SrhNi0 4 systems, the valence band spectra do not shift as a function of the doping concentration, which suggests that EF is pinned by the states within the charge-transfer gap and that the rigid band description is not appropriate in considering the metal-insulator transition in these systems.