Enhanced superconductivity in FeSe/SrTiO$_3$ from the combination of forward scattering phonons and spin fluctuations
Louk Rademaker,
Gustavo Alvarez-Suchini,
Ken Nakatsukasa
et al.
Abstract: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 focus on the case … Show more
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