Observation of superconductivity at 30 K~46 K in AxFe2Se2 (A = Li, Na,
Ba, Sr, Ca, Yb, and Eu)
We demonstrate that a series of
Superconductors with enhanced Tc = 30~46 K can be obtained by intercalating
Metals, Li, Na, Ba, Sr, Ca, Yb, and Eu in between FeSe layers by the liquid
Ammonia method at room temperature. The findings provide a new starting point
For studying the properties of these s...