Strong Coupling of the Iron-Quadrupole and Anion-Dipole Polarizations in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$

Chao Ma, Lijun Wu, Wei-Guo Yin +6

We use a quantitative convergent beam electron diffraction (CBED) based method to image the valence electron density distribution in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$. We show a remar…