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arXiv · 1406.0734

First single crystal growth and structural analysis of superconducting layered bismuth oxyselenide; La(O,F)BiSe2

Masashi Tanaka·Masanori Nagao·Yoshitaka Matsushita·Masaya Fujioka·Saleem J. Denholme·Takahide Yamaguchi·Hiroyuki Takeya·Yoshihiko Takano
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Abstract

Single crystal of La(O,F)BiSe2 was successfully grown for the first time by the CsCl flux method. Single crystal X-ray structural analysis clearly showed that La(O,F)BiSe2 crystalizes with space group P4/nmm (lattice parameters a = 4.1408(2) {\AA}, c = 14.1096(6) {\AA}). The structure is composed of alternating BiSe2 and LaO layers. Magnetic susceptibility and resistivity measurements showed the superconducting transition at 3.6 K, which is higher than that of as-grown La(O,F)BiS2. The structural analysis implies that La(O,F)BiSe2 is potential superconductor having higher Tc under high pressure.

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Masashi Tanaka, Masanori Nagao, Yoshitaka Matsushita, Masaya Fujioka, Saleem J. Denholme, Takahide Yamaguchi, Hiroyuki Takeya, Yoshihiko Takano. 2014-06-03. First single crystal growth and structural analysis of superconducting layered bismuth oxyselenide; La(O,F)BiSe2. https://doi.org/10.1016/j.jssc.2014.07.026

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