Existence of Orbital Order and its Fluctuation in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ Revealed by X-ray Absorption Spectroscopy

Y. K. Kim, W. S. Jung, G. R. Han +13

We performed temperature dependent X-ray linear dichroism (XLD) experiments on an iron pnictide system, Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ with $x$=0.00 and 0.05, to experimentally ver…