Spectral Evidence for Emergent Order in Ba${}_{1-x}$Na${}_x$Fe${}_2$As${}_2$

M. Yi, A. Frano, D. H. Lu +21

We report an angle-resolved photoemission spectroscopy study of the iron-based superconductor family, Ba${}_{1-x}$Na${}_x$Fe${}_2$As${}_2$. This system harbors the recently discovered doub…