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arXiv · 1009.3315

Superconductivity in oxygen-annealed FeTe1-xSx single crystal

Yoshikazu Mizuguchi·Keita Deguchi·Yasuna Kawasaki·Toshinori Ozaki·Masanori Nagao·Shunsuke Tsuda·Takahide Yamaguchi·Yoshihiko Takano
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Abstract

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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Yoshikazu Mizuguchi, Keita Deguchi, Yasuna Kawasaki, Toshinori Ozaki, Masanori Nagao, Shunsuke Tsuda, Takahide Yamaguchi, Yoshihiko Takano. 2010-09-17. Superconductivity in oxygen-annealed FeTe1-xSx single crystal. https://doi.org/10.1063/1.3531554

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