Fig. 3: Energy dispersion of the sub-gap resonances as a function of the tip-sample distance.
From: Spatially dispersing Yu-Shiba-Rusinov states in the unconventional superconductor FeTe0.55Se0.45
a Conductance intensity plot for varying tip-sample distance (Δd) normalized by the normal state resistance RN. The in-gap states disperse and cross at the Fermi level. b Same as in a for the deconvoluted LDOS data. Inset: schematic representation of the tip movement when we vary the tip-sample distance (Δd) and when the tip scans laterally (Δy and Δx) at a constant height. c, d Azimuthally-averaged radial profiles at different tip-sample distances indicated by blue arrows in b. Δr, indicates the radial offset \(\sqrt{{{\Delta }}{x}^{2}+{{\Delta }}{y}^{2}}\) from the impurity center (Δr = 0). e Energy of the impurity bound state for varying tip-sample distance, extracted by fitting a lorentzian curve in 5 intensity plots (see Supplementary Note 3) similar to c, d.
