Fig. 2. Resonant transition of the heavy 4f state.

(A) Linearly polarized XAS spectra [measured through the total electron yield (TEY)] on CeCo(In_1−xCd_x)₅ at x = 0 (blue) and x = 0.1 (green) doping level at 10 K, which demonstrates the transition between the 3d and 4f states. The curves are shifted vertically for clarity. (B) RXS scattering geometry, with the scattering plane lying at 45° relative to the a and b axes.