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

Figure 37

(a) Model phonon density of states 𝐹(𝜔) with the peak at 𝜔₀. (b) The real (solid) Δ_𝑅 and imaginary (dashed) part Δ_𝐼 of the gap Δ(𝜔). (c) The normalized tunnelling density of states 𝑁_𝑇(𝜔)/𝑁(0) (solid) compared with the BCS density of states (dashed). From [232].