Final-state effects on delayed photoemission in the attosecond streaking of core-level spectral lines of copper dihalides

Abstract

In the attosecond (as) streaking of Cu 3s core-level photoemission of copper dihalides, we predict theoretically that the satellite (3d9) is emitted later than the main line (3d10L -1; L is a ligand). The emission time delay is originated from the final-state effect due to electron correlation between the core level and the 3d shell, which leads to the difference in core-hole screening, depending on the final state, i.e., satellite or main line. Further, we find that the time delay corresponds to a quantification of the extrinsic loss of photoemission. © 2012 American Physical Society.