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arXiv · 1012.4950

Transport properties of the new Fe-based superconductor KxFe2Se2 (Tc = 33 K)

Yoshikazu Mizuguchi·Hiroyuki Takeya·Yasuna Kawasaki·Toshinori Ozaki·Shunsuke Tsuda·Takahide Yamaguchi·Yoshihiko Takano
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Abstract

We synthesized the new Fe-based superconductor K0.8Fe2Se2 single crystals. The obtained single crystal exhibited a sharp superconducting transition, and the onset and zero-resistivity temperature was estimated to be 33 and 31.8 K, respectively. A high upper critical field of 192 T was obtained. Anisotropy of superconductivity of K0.8Fe2Se2 was ~3.6. Both the high upper critical field and comparably low anisotropy are advantageous for the application under high magnetic field.

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Yoshikazu Mizuguchi, Hiroyuki Takeya, Yasuna Kawasaki, Toshinori Ozaki, Shunsuke Tsuda, Takahide Yamaguchi, Yoshihiko Takano. 2010-12-22. Transport properties of the new Fe-based superconductor KxFe2Se2 (Tc = 33 K). https://doi.org/10.1063/1.3549702

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