Figure 1
Band dispersions of FeTe0.6Se0.4 along Γ-X line measured at 25 K.
(a) Intensity plot of E vs. k measured at 25 K along Γ-X line. The shifted and rescaled DFT result is overlaid as solid lines. The open circles indicate band dispersions deduced from the peak positions of the second derivative spectra. (b) Intensity plot near EF. The open rectangles indicate band dispersions deduced from the fitting to the EDCs. The solid lines are dispersions by fitting to the rectangles with a polynomial function. (c) Fitting to several cuts of EDCs after dividing by the FD function. The solid lines indicate the fitting results. The fitting functions were obtained using three Lorentzians convoluted with the Gaussian corresponding to the experimental energy resolution. (d) Fitting results with the component Lorentzians for three cases, around the Γ point, k ~ 0.07 Å and k ~ 0.1 Å.
