Fig. 2: Core-level photoemission spectra of PdCoO2.
a Co 2p spectra collected by using both tender/hard X-rays (hν = 4 keV) and monochromated Al Kα X-rays (hν = 1.486 keV) are compared to cluster model (black) and GW + cumulant (green) results. The black triangles indicate charge-transfer satellites while the red triangles indicate the position of the feature resulting from nonlocal screening. b Equivalent graphs for the Pd 3d spectrum. The blue triangles indicate plasmon satellites. Note that the cluster model calculation does not reproduce the plasmon satellites while the GW + cumulant approach does.
