Electron–phonon coupling has been considered as a possible mechanism behind the high superconducting critical temperature of FeSe monolayers. The doping dependence of the superconductivity casts serious doubt that it plays a decisive role.
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Mazin, I. The FeSe riddle. Nature Mater 14, 755–756 (2015). https://doi.org/10.1038/nmat4371
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DOI: https://doi.org/10.1038/nmat4371
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