Moisture-induced superconductivity in FeTe0.8S0.2
Y. Mizuguchi, K. Deguchi, S. Tsuda, T. Yamaguchi, Y. Takano
DOI 10.1103/PhysRevB.81.214510 · Physical Review B
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Abstract
Moisture-induced superconductivity was observed in FeTe0.8S0.2. With exposing the sample to the air, the zero-resistivity temperature and the superconducting volume fraction were enhanced up to 7.2 K and 48.5%, respectively, while the as-grown sample showed only filamentary superconductivity. We concluded that the causes of the evolution of superconductivity were water-related ions and/or molecules because only the sample kept in water at room temperature for several days showed superconductivity. The speed of evolution of superconductivity was strongly enhanced by immersing the sample into the hot water.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| FeTe0.8S0.2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10.2 | Pressure not reported | onset |
| FeTe0.8S0.2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.2 | Pressure not reported | zero_resistance |
| FeTe0.8S0.2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.2 | Pressure not reported | midpoint |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 13 | Pressure unresolved | onset |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37 | 4 GPa | onset |
| SrFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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