Inducement of superconductivity in Fe(Te,S) by sulfuric acid treatment [PDF]
Masanori Nagao, Yoshikazu Mizuguchi, Keita Deguchi, Satoshi Watauchi, Isao Tanaka, Yoshihiko TakanoSuperconductivity of Fe0.95Te0.85S0.15 was induced and enhanced by immersing the as-grown (non-superconducting) sample into sulfuric acid. Dissolved Fe was detected in the sulfuric acid treatment, indicating that excess Fe was removed from the Fe0.95Te0.85S0.15 sample.View original: http://arxiv.org/abs/1204.4035
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