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

Figure 13

Transport EPI spectral function coupling constant in YBCO as a function of plasma frequency 𝜔_𝑝 as derived from the experimental slope of resistivity 𝜌^(𝑇).𝜆_𝑥 for 𝜌^𝑥(𝑇)=0.6𝜇Ωcm/K and 𝜆_𝑦 for 𝜌^𝑦(𝑇)=0.25𝜇Ωcm/K [119]. Squares are LDA values [121].