Momentum dependence of the electron-phonon coupling and self-energy effects in YBa_2Cu_3O_7 within the local density approximation

Rolf Heid, Klaus-Peter Bohnen, Roland Zeyher +1

Using the local density approximation (LDA) and a realistic phonon spectrum we determine the momentum and frequency dependence of ${\alpha }^{2}F(\mathbf{k},\omega )$ in YBa${}_2$Cu${}_3$O${}_7$ for the bo…