Material and Doping Dependence of the Nodal and Antinodal Dispersion Renormalizations in Single- and Multilayer Cuprates
Figure 4
The doping dependence of the nodal spectrum at a temperature well below (10 K). Shown in the upper row are the false color plots of the spectra taken along the cut as indicated in the inset. The black curves are band dispersion obtained by fitting momentum dispersion curves (MDCs) to Lorentizan functions. The apparent kink positions in the dispersion are marked by the yellow-shaded area, which appears to be approximately the same for all three dopings. The dashed lines serve as a guide-to-the-eye for visualizing the apparent kink in the dispersion. Shown in the lower row are the real parts of the self-energy extracted from subtracting the band dispersion from a linear bare band. The arrows indicate the positions of fine structure in the extracted Re.
