Through a Lattice Darkly: Shedding Light on Electron-Phonon Coupling in the High Tc Cuprates

Figure 8

MDC dispersions from cuts parallel to - taken off node towards the antinodal point. (a) Data taken in the superconducting phase ( = 25 K). The inset shows the isotope energy shift versus the isotope-averaged superconducting gap, . The isotope shift is measured at the momentum value where the isotope-averaged binding energy is 220 meV. The apparent linear correlation indicated by the dashed line is independent of the binding energy used. (b) MDC dispersions from the same cuts measured above ( = 100 K). The inset illustrates the location of the cuts. The figures are from [33].

(a)

(b)