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Superconductivity in oxygen-annealed FeTe1-xSx single crystal

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arxiv 1009.3315 v1 pith:MBYZMWKR submitted 2010-09-17 cond-mat.supr-con

Yoshikazu Mizuguchi , Keita Deguchi , Yasuna Kawasaki , Toshinori Ozaki , Masanori Nagao , Shunsuke Tsuda , Takahide Yamaguchi , Yoshihiko Takano This is my paper · ORCID
classification cond-mat.supr-con
keywords fete1-xsxsuperconductivityannealingantiferromagnetismoxygenoxygen-annealedsingleanisotropy
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We investigated the S-doping-driven phase transition from antiferromagnetic to superconducting in FeTe1-xSx single crystals. The partial substitution of Te by S suppresses antiferromagnetism in Fe-square lattice. Superconductivity is induced by oxygen annealing for only FeTe1-xSx in which the long-range magnetic ordering is suppressed. To realize superconductivity in FeTe1-xSx, both S concentration enough to suppress antiferromagnetism and oxygen annealing are required. Anisotropy of superconductivity in oxygen-annealed FeTe0.886S0.114 was estimated to be 1.17.

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