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

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arxiv 1012.4950 v1 pith:VKPFWMZW submitted 2010-12-22 cond-mat.supr-con

Yoshikazu Mizuguchi , Hiroyuki Takeya , Yasuna Kawasaki , Toshinori Ozaki , Shunsuke Tsuda , Takahide Yamaguchi , Yoshihiko Takano This is my paper · ORCID
classification cond-mat.supr-con
keywords fieldhighanisotropycriticalfe-basedfe2se2obtainedsingle
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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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