Figure 1. PNR results of E+T-conditioned sample.

(a) Fitted PNR data, with R⁺⁺ (R⁻⁻) identified by solid circles (open triangles), scaled by q⁴ and (b) spin asymmetry for the sample as-grown and after E+T conditioning. (c) Depth-dependent real and imaginary nuclear SLD (ρ_N and ρ_imag), and magnetic SLD (ρ_M) extracted from the PNR. In all panels black, red and blue lines identify the as-grown, +40 V conditioned, and +/−40 V conditioned samples, respectively. In c the solid and dashed lines identify ρ_N and ρ_M, respectively, and the green line identifies ρ_imag. Background colours in c represent (red) Pd, (purple) AlO_x, (green) GdO_x and (yellow) Co, respectively. In a and b the experimental data are shown as symbols, and the lines are fits corresponding to the depth profile shown in c. Error bars in a and b correspond to ±1s.d.; error bars for c are shown in Supplementary Fig. 2. Arrows in a and b identify the bulk ρ_N for Co (2.25 × 10⁻⁴ nm⁻²) and CoO (4.29 × 10⁻⁴ nm⁻²).