Enhanced superconductivity in FeSe/SrTiO3 from the combination of forward scattering phonons and spin fluctuations

@article{Rademaker2021EnhancedSI,
  title={Enhanced superconductivity in 
FeSe/SrTiO3
 from the combination of forward scattering phonons and spin fluctuations},
  author={Louk Rademaker and Gustavo Alvarez-Suchini and Ken Nakatsukasa and Yan Wang and Steven Johnston},
  journal={Physical Review B},
  year={2021},
  volume={103}
}
We study the effect of combining spin fluctuations and forward scattering electron-phonon (eph) coupling on the superconductivity in the FeSe/SrTiO3 system modeled by a phenomenological two-band Hubbard model with long-range e-ph interactions. We treat the electron and phonon degrees of freedom on an equal footing using a fully self-consistent FLEX plus Migdal-Eliashberg calculation, which includes a self-consistent determination of the spin fluctuation spectrum. Based on FeSe monolayers, we… 
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