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arXiv · 1804.02880

Superconductivity in REO0.5F0.5BiS2 with high-entropy-alloy-type blocking layers

Ryota Sogabe·Yosuke Goto·Yoshikazu Mizuguchi
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Abstract

We synthesized new REO0.5F0.5BiS2 (RE: rare earth) superconductors with the high-entropy-alloy-type (HEA-type) REO blocking layers. According to the RE concentration and the RE ionic radius, the lattice constant of a systematically changed in the HEA-type samples. A sharp superconducting transition was observed in the resistivity measurements for all the HEA-type samples, and the transition temperature of the HEA-type samples was higher than that of typical REO0.5F0.5BiS2. The sharp superconducting transition and the enhanced superconducting properties of the HEA-type samples may indicate the effectiveness of the HEA states of the REO blocking layers in the REO0.5F0.5BiS2 system.

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Ryota Sogabe, Yosuke Goto, Yoshikazu Mizuguchi. 2018-04-10. Superconductivity in REO0.5F0.5BiS2 with high-entropy-alloy-type blocking layers. https://doi.org/10.7567/apex.11.053102

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