Resistive superconducting transition and effects of atmospheric exposure in the intercalation superconductor Ax(C2H8N2)yFe2- zSe2 (A = Li, Na)

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 ~...

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Bibliographic Details
Published in:Journal of physics. Conference series 2014-12, Vol.568 (2), p.22032
Main Authors: Hatakeda, T, Noji, T, Hosono, S, Kawamata, T, Kato, M, Koike, Y
Format: Article
Language:English
Subjects:
Crystal structure
Electrical resistivity
Exposure
Intercalation
Physics
Superconductivity
Superconductors
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Summary: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.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/568/2/022032