Fig. 5: Identification of a non-dispersive signal above the Fermi level.
From: Electronic stripe patterns near the fermi level of tetragonal Fe(Se,S)
a dI/dV map on FeSe0.81S0.19 at 6 meV. The scale bar represents 50 nm. b, c Dispersion maps along high-symmetry directions obtained from FTs of the 45 × 45 nm2 FOV (see Fig. 2). d, e Similar to b, c but obtained from the larger 170 × 170 nm2 FOV shown in a, and with higher energy resolution. f Same as a but with transparent masks separating the map into two regions: near FeVs (orange), and away from FeVs (blue). g, h Dispersion maps along the smallest Fe-Fe direction, obtained from FTs over the orange and blue regions in f, respectively. These two images were scaled so their intensities sum to that of the full map. i Constant energy line cuts of the dispersion maps in h (gray lines) and i (black lines). The orange markers are the locations of the peaks obtained from fits to the linecuts (see Supplementary Fig. 5). The FTs used to make the dispersion maps in this figure were performed over the mean subtracted dI/dV maps without normalization.
