Parallel valence- and core-level photoemission studies of the metal-to-nonmetal transition in YBa2Cu3O7-x.
Valence-level and Cu 2p core-level photoemission spectra for YBa2Cu3O7-x in both metallic (x<0.5) and nonmetallic (x>0.5) phases are presented together for the first time. The core spectra show evidence for holes in the hybrid Cu3d-O 2p valence levels in the metallic state, but nonethe...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1989
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