Abstract
We report bulk-sensitive hard x-ray core-level photoemission spectroscopy (PES) of single crystal and the high- cuprate (Bi2212). exhibits low binding energy “satellites” to the V “main lines” in the metallic phase, which are suppressed in the antiferromagnetic insulator phase. In contrast, the Cu spectra of Bi2212 do not show temperature-dependent features, but a comparison with soft x-ray PES indicates a large increase in the satellites or weight in the bulk. Cluster model calculations, including a full multiplet structure and a screening channel derived from the coherent band at the Fermi energy, give very satisfactory agreement with the experiments.
- Received 21 January 2005
DOI:https://doi.org/10.1103/PhysRevB.71.155102
©2005 American Physical Society