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arXiv · 1708.01017

Quenching Dependence on Superconductivity in the Synthesizing Process of Single Crystals of Rb$_x$Fe$_{2-y}$Se$_2$

Masashi Tanaka·Hiroyuki Takeya·Yoshihiko Takano
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Abstract

Superconducting single crystals of Rb-intercalated FeSe compounds Rb$_x$Fe$_{2-y}$Se$_2$ were prepared by using a starting material of Rb$_2$Se as a Rb source. The superconducting properties and the surface microstructures were systematically controlled by varying the cooling rate in the quenching process. The higher cooling rate in the sample provided a higher superconducting transition temperature with highly connected superconducting mesh-like surface structure. Extremely slow-cooling process led to the complete isolation between the superconducting domains.

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Masashi Tanaka, Hiroyuki Takeya, Yoshihiko Takano. 2017-08-03. Quenching Dependence on Superconductivity in the Synthesizing Process of Single Crystals of Rb$_x$Fe$_{2-y}$Se$_2$. https://doi.org/10.1016/j.ssc.2017.08.002

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