Superconductivity and electronic fluctuations in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ studied by Raman scattering

S. -F. Wu, P. Richard, H. Ding +6

Using polarization-resolved electronic Raman scattering we study under-doped, optimally-doped and over-doped Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ samples in the normal and superconducting…