Figure 5
Cu L edge XAS and XMCD spectra of specimens S1 and S2. FY XAS with two different photon helicities (ρ+ and ρ−) and the corresponding XMCD signals of the Cu L3,2 edges from the S1 (a,b) and S2 (e,f) MLs at 100 K measured at 1 kOe and from the S1 (c,d) and S2 (g,h) MLs at 10 K measured at remanence after field cooling at 1 kOe. The XMCD signals have been multiplied by a factor of 102. The XMCD signal at 100 K for the S2 ML is ambiguous. The horizontal arrows (black and blue) indicate the Cu magnetic moments direction with respect to the H a direction. The vertical arrows indicate the positions of positive and negative XMCD signals of the L3,2 edges. Schematic pictures of the experimental configuration for (i) S1 and (j) S2 are also shown in the adjacent right panels.
