Hybrid crystals of cuprates and iron-based superconductors
Dai Xia
1
, Le Cong-Cong
1
, Wu Xian-Xin
1
, Hu Jiang-Ping
1, 2, 3, †,
Crystal structure of Ba
2
CuO
2
Fe
2
As
2
(K
2
CuO
2
Fe
2
Se
2
).