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

Figure 27

Atomic polarization vectors and their frequencies (in meV) at special points in the Brillouin zone. The larger closed circles in the lattice are O-ions. Γ−𝑋 is along the Cu-O-Cu direction. Arrows indicate displacements. The modes in square and round brackets are the transverse and longitudinal optical modes, respectively. (a) Modes of the P3 peak. (b) Modes of the P4 peak. From [46, 47, 53, 54].

(a)

(b)