Fig. 72: Top part filled symbols: Magnetic Asymmetry Ratio measured at the L3 absorption edge vs. perpendicular momentum transfer along the (-1,0) Pt crystal truncation rod, for interface Pt atoms in contact with a ultrathin (6 atomic layers) ferromagnetic Co film. The non-zero values of R are a result of the magnetisation of the interface Pt atoms in the vicinity of the ferromagnetic overlayer. Empty symbols: the same measurements done at the L2 absorption edge of Pt. Bottom part: Sum of the data in the top part which represents the dichroic signal along the crystal truncation rod. This quantity is closely related to the expectation value of the orbital angular momentum of the Pt atoms and its dependence on the perpendicular momentum transfer L contains information on how this quantity varies in the different atomic planes of Pt at the vicinity of the interface.