Doping dependence of the lattice dynamics in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ studied by Raman spectroscopy

L. Chauviere, Y. Gallais, M. Cazayous +4

We report Raman scattering spectra of iron-pnictide superconductor Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ single crystals with varying cobalt $x$ content. Upon cooling through the tetragon…