On the origin of critical nematic fluctuations in pnictide superconductors

S. -F. Wu, W. -L. Zhang, L. Li +6

We employ polarization-resolved Raman spectroscopy to study critical nematic fluctuations in Ba(Fe${}_{1-x}$Au${}_x$)${}_2$As${}_2$ superconductors above and across well separated tetragon…