Block Antiferromagnetism and Checkerboard Charge Ordering in Alkali-doped Iron Selenides $R$${}_{1-x}$Fe${}_{2-y}$Se${}_2$

Wei Li, Shuai Dong, Chen Fang +1

By performing first-principles electronic structure calculations and analyzing effective magnetic model of alkali-doped iron selenides, we show that the materials without iron vaca…