Broken mirror symmetry, incommensurate spin correlations, and $B_{2g}$ nematic order in iron pnictides

Yiming Wang, Wenjun Hu, Rong Yu +1

Motivated by growing indications for a distinct form of nematic correlations in the extremely hole doped iron pnictide compounds $A$Fe${}_2$As${}_2$ ($A$=K,Rb,Cs), we consider spin-dri…