Many of the questions below can be answered by experimenting with the theory. If you turn off successively interactions (Exchange interaction, Ni-3d spin-orbit coupling, 2p-3d Coulomb interaction, 3-d Coulomb interaction, ...) you can find which interactions are responsible for the effect we describe. Combining this with looking at the right expectation values (including partial excitations and spectroscopy in tensor form) can give insight into the physics behind the observation. Good luck

*) The model we created is good for the photo electron spectrum of NiO valance bands, but not for the inverse photo electron spectrum. Why is this the case

*) Given the result of the previous question. For which types of core level spectroscopy is the model useful. Consider the case of XAS and cPES on the Ni 2p edge first. Then calculate these spectra for U2p3d -5, 0, 5, 10, 15 and 20. (these values are not physical realistic, but used to show a trent and form that learn when what is important)




