Observation of incipient charge nematicity in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$

Y. Gallais, R. M. Fernandes, I. Paul +7

Using electronic Raman spectroscopy, we report direct measurements of charge nematic fluctuations in the tetragonal phase of strain-free Ba(Fe${}_{1-x}$Co${}_x{)}_2$As${}_2$ single c…