Spin-polarized magnetic circular dichroism in Ni 2p core-level photoemission -: art. no. 212401

Spin-resolved photoemission from ferromagnetic Ni has been measured using circularly polarized x rays, which allowed us to obtain the difference spectra, i.e., the magnetic circular dichroism, the spin spectrum, and the spin-orbit spectrum from the same data set. The results are compared with calculations for the final-state impurity model in which the core-ionized atom is described as an impurity within a many-body formalism. A good agreement between experiment and theory is obtained for all difference spectra, although the spin-orbit spectrum shows an increased spin-polarized background. We also quantified the relation between the 2p spin-orbit spectrum and the L-2,L-3 x-ray magnetic circular dichroism.