Fig. 2

REXS data in the polarization flipped σ-π channel of sample x = 0.02 (purple) and x = 0.028 (blue). a and b show K and L scans through the (0, 1, 14) position at T = 10 K respectively. c Energy dependence of the (0, 1, 14) peak at 10 K and its comparison to the Ir L3 fluorescence line. d Temperature dependence of the (0, 1, 14) peaks for both samples. Data have been normalized to appear on the same scale. The solid lines in (a, b, d) are the fits to the data. Data are collected at the energies of 11.217 and 11.215 keV for the x = 0.02 and x = 0.028 sample, respectively. All vertical error bars in the figure represent 1 standard deviation (s.d.) statistical errors