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

doi:10.1016/j.jssc.2014.07.026

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

Superconductivity 2014-08-15 v1

Authors: 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.

Keywords

single crystal growth La(O,F)BiSe2 CsCl flux method superconductivity structural analysis space group P4/nmm transition temperature high pressure

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@article{arxiv.1406.0734,
  title  = {First single crystal growth and structural analysis of superconducting layered bismuth oxyselenide; La(O,F)BiSe2},
  author = {Masashi Tanaka and Masanori Nagao and Yoshitaka Matsushita and Masaya Fujioka and Saleem J. Denholme and Takahide Yamaguchi and Hiroyuki Takeya and Yoshihiko Takano},
  journal= {arXiv preprint arXiv:1406.0734},
  year   = {2014}
}

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19 pages, 4 figures, 3 tables

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

Abstract

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