Resonant reflectivity from a Ni(110) crystal: Magnetic effects at the Ni 2 p edges using linearly and circularly polarized photons

We have measured the magnetization dependence of the resonant reflectivity at the $2p$ edges of Ni in a Ni(110) single crystal. Experiments were performed using both circularly and linearly polarized photons. Large magnetic effects on the reflectivity were observed in both experimental configurations over a wide angular range. A simple model, using the absorption of elliptically polarized light as input, gives results in very good agreement with our data as a whole. We also show that angular- and energy-dependent reflectivity at resonance enhances fine spectroscopic signatures and increases the experimental information concerning the ground state properties of magnetic materials.