Figure 1. Sample structures, XAS spectra and XMCD spectra.

(a,b) Schematic structures of sample A (a) and sample B (b). (c,d) XAS spectra of μ⁻, μ⁺ and (μ⁺ + μ⁻)/2 at the L₂ (~721 eV) and L₃ (~708 eV) absorption edges of Fe for sample A (c) and sample B (d) measured at 5.6 K with μ₀H = 5 T applied perpendicular to the film surface. The insets show a magnified plot of the spectra at the Fe L₃ edge. (e,f) XMCD (=μ⁺ − μ⁻) spectra at the L₂ and L₃ absorption edges of Fe for sample A (e) and sample B (f) measured at 5.6 K with various H applied perpendicular to the film surface. The insets show a magnified plot of the spectra at the Fe L₃ edge, in which the XMCD data are normalized to 707.3 eV.