Geometric and electronic structure of the N/Rh(100) system by core-level photoelectron spectroscopy: Experiment and theory

The nitrogen interaction with Rh(100) was studied by combining high-energy resolution core level photoelectron spectroscopy and density functional calculations. Nitrogen-induced Rh3d(5/2) surface core level shifts depend on the N-Rh local geometrical configuration. The core level shifts are dominated by initial state effects and correlate strongly with the variation of the energy position of the surface atom-projected d-band center.