Absence of BCS-BEC Crossover in FeSe0.45Te0 55 Superconductor

Junjie Jia, Yadong Gu, Chaohui Yin +21

In iron-based superconductor Fe(Se,Te), a flat band-like feature near the Fermi level was observed around the Brillouin zone center in the superconducting state. It is under debate…