Is LaFeAsO1-xFx an electron-phonon superconductor?

  title={Is LaFeAsO1-xFx an electron-phonon superconductor?},
  author={Lilia Boeri and O. V. Dolgov and Alexander A. Golubov},
  journal={Physical review letters},
  volume={101 2},
In this Letter, we calculate the electron-phonon coupling of the newly discovered superconductor LaFeAsO1-xFx using linear response. For pure LaFeAsO, the calculated electron-phonon coupling constant lambda=0.21 and logarithmic-averaged frequency omegaln=206 K give a maximum Tc of 0.8 K, using the standard Migdal-Eliashberg theory. For the F-doped compounds, we predict even smaller coupling constants. To reproduce the experimental Tc, a 5-6 times larger coupling constant would be needed. Our… CONTINUE READING

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