Bosonic Spectral Function and the Electron-Phonon Interaction in HTSC Cuprates

Figure 18

NCCO electron-doped: (a) ImΣ(𝜔) measured in the nodal point. Curves are offsets by 50 meV for clarity. The change of the slope in the last bottom curve is at the phonon energy. (b) ImΣ(𝜔) for the antinodal direction with 30meV offset. (c) Experimental phonon dispersion of the bond stretching modes. (d) Estimated 𝜆^𝑒𝑝_eff from ImΣ(𝜔). From [148].

(a)

(b)

(c)

(d)