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

Figure 17

(a) The ARPES spectrum of undoped Ca₂CuO₂Cl₂ at 𝐤=(𝜋/2,𝜋/2). Gaussian shape—solid line, Lorentzian shape—dashed line. (b) Dispersion of the polaronic band—A—and of the quasiparticle band—B—along the nodal direction. Horizontal lines are the chemical potentials for a large number of samples. From [143].

(a)

(b)