We have succeeded in observing zero-resistivity in newly discovered intercalation superconductors Ax(C2H8N2)yFe2-zSe2 (A Li, Na) with Tc 45 K, using The sintered pellet samples. The electrical resistivity, ρ, in The normal state is metallic and Tconset defined in The ρ measurements, is as high as ∼ 57 K. We have also investigated effects of The atmospheric exposure in Lix(C2H8N2)yFe2-zSe2. It has been found that both The crystal structure and superconductivity are maintained at least up to several days, indicating this material is comparatively resistant to The atmospheric exposure.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2014|
|Event||27th International Conference on Low Temperature Physics, LT 2014 - Buenos Aires, Argentina|
Duration: 2014 Aug 6 → 2014 Aug 13