Fig. 2: Temperature dependence of the integrated electromagnon absorbance.
a Integrated absorbance of the three excitations EM, EX1 and EX2 obtained from fitting the absorbance spectra of the 0P-CuO sample outside DAC, and as a function of temperature with Eω∥[101]. The absolute values of the integrated absorbance of EX1 and EX2 were arbitrary multiplied by 8 and 2, respectively, in order to appear in the same scale as the values of the integrated absorbance of EM. b Example of Lorentzian fit on the spectrum at 208 K from Fig. 1a. For each point, error bar obtained from the fitting procedure is represented and visible if bigger than the point-size.
