Resonant excitation of an oxygen valence satellite in photoemission from high-Tc superconductors
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. © 1989 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review B
Kurtz, R., Robey, S., Stockbauer, R., Mueller, D., Shih, A., & Toth, L. (1989). Resonant excitation of an oxygen valence satellite in photoemission from high-Tc superconductors. Physical Review B, 39 (7), 4768-4771. https://doi.org/10.1103/PhysRevB.39.4768