Optical properties of $A$Fe${}_2$As${}_2$ ($A=$Ca, Sr, and Ba) single crystals

Y. M. Dai, A. Akrap, S. L. Bud'ko +2

The detailed optical properties have been determined for the iron-based materials $A$Fe${}_2$As${}_2$, where $A=$Ca, Sr, and Ba, for light polarized in the iron-arsenic ($a-b$) plane…