K. Deguchi, D. Sato, M. Sugimoto, H. Hara, Y. Kawasaki, S. Demura, T. Watanabe, S. J. Denholme, H. Okazaki, T. Ozaki, T. Yamaguchi, H. Takeya, T. Soga, M. Tomita, Y. Takano
To elucidate the mechanism as to why alcoholic beverages can induce superconductivity in Fe1+dTe1-xSx samples, we performed component analysis and found that weak acid such as organic acid has the ability to induce superconductivity. Inductively-coupled plasma spectroscopy was performed on weak acid solutions post annealing. We found that the mechanism of inducement of superconductivity in Fe1+dTe1-xSx is the deintercalation of excess Fe from the interlayer sites.
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http://arxiv.org/abs/1204.0190
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