Resonant excitation of an oxygen valence satellite in photoemission from high-Tc superconductors
Richard L. Kurtz, Steven W. Robey, Roger L. Stockbauer, D. Mueller, A. Shih, L. Toth
DOI 10.1103/PhysRevB.39.4768 · Physical Review B
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Abstract
A detailed analysis of the intensities of valence-band photoelectron features of superconducting YBa2Cu3O7−x and semiconducting La1.85Sr0.05CuO4 has revealed a resonance in the peak located at a binding energy of ∼9.5 eV for photon energies spanning the onset of O 2s excitations. This demonstrates conclusively that the feature is associated with oxygen excitations. The origin of the satellite is described and its disappearance on superconducting surfaces is explained.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
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