Is BaCr${}_2$As${}_2$ symmetrical to BaFe${}_2$As${}_2$ with respect to half $3d$ shell filling?

P. Richard, A. van Roekeghem, B. Q. Lv +7

We have performed an angle-resolved photoemission spectroscopy study of BaCr${}_2$As${}_2$, which has the same crystal structure as BaFe${}_2$As${}_2$, a parent compound of Fe-based superc…