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

Figure 35

Adiabatic (𝜔=0) vertex function 𝛾(𝐤_𝐹,𝐪) of the 𝑡-𝐽 model as a function of the momentum 𝑎𝑞 with 𝐪=(𝑞,𝑞) for three different doping levels 𝛿. From [130].