METAL-TO-NON-METAL TRANSITIONS IN HIGH-TEMPERATURE OXIDE SUPERCONDUCTORS MONITORED BY PHOTOELECTRON-SPECTROSCOPY
Metal-to-non-metal transitions induced in Bi-Sr-Ca-Cu-O by cation substitution and in Y-Ba-Cu-O by oxygen deficiency are used to show that changes in the Cu 2p signature in X-ray photoemission may be correlated with the changes in the hole doping level on the Cu-O2 planes of these high-temperature s...
| Main Authors: | , , , |
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| Format: | Journal article |
| Published: |
1991
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| Summary: | Metal-to-non-metal transitions induced in Bi-Sr-Ca-Cu-O by cation substitution and in Y-Ba-Cu-O by oxygen deficiency are used to show that changes in the Cu 2p signature in X-ray photoemission may be correlated with the changes in the hole doping level on the Cu-O2 planes of these high-temperature superconducting oxides. Parallel core and valence studies of the transition in the Bi-Sr-Ca-Cu-O material suggest that some of the introduced holes may be present on the Bi-O planes in the superconducting state. |
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