Figure 2

In-field XCD and deconvolution of XMCD and XNCD signals at T=7 K. (a) XCD data collected at T = 7 K under application of H = ± 4 T field applied along screw c-axis. Blue and red traces correspond to blue and (small) red chiral domains in Fig. 1c. Fe K-edge XCD is dominated by XNCD contrast while Dy L-edge XCD is dominated by XMCD contrast at threshold but displays visible XNCD contributions above threshold. (b) Deconvolution of XNCD and XMCD signals from each chiral domain obtained by addition and subtraction (followed by halving) of XCD data for opposite field directions, respectively. As before, blue and red traces correspond to blue and red chiral domains. The green trace is the XNCD signal from the red chiral domain in the absence of an applied magnetic field.