Extended Data Figure 4: Fitting the intensities of the ARPES spectra at M.
From: Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3
a, Plot showing two different backgrounds used in the fitting. Using the blue circles as fixed points, we first modelled the background using a spline interpolation, plotted in red. The second fit used a Shirley background (see Supplementary Information), plotted in purple. b, Data and fitting with the spline background subtracted. We fitted to four Gaussian peaks, which are plotted separately for clarity. c, Data and fitting with the Shirley background subtracted. We restrict our fitting energy window to be from â0.32Â eV to 0.03Â eV.
