Superconductivity at 3.7 K in Ternary Silicide Li2IrSi3

Daigorou Hirai; Rui Kawakami; Oxana V. Magdysyuk; Robert E. Dinnebier; Alexander Yaresko; Hidenori Takagi

doi:10.7566/JPSJ.83.103703

Superconductivity at 3.7 K in Ternary Silicide Li2IrSi3

Superconductivity 2014-09-15 v1 Materials Science Strongly Correlated Electrons

Authors: Daigorou Hirai , Rui Kawakami , Oxana V. Magdysyuk , Robert E. Dinnebier , Alexander Yaresko , Hidenori Takagi

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Abstract

We report the discovery of superconductivity at Tc = 3.7 K in the new ternary lithium silicide Li2IrSi3. The crystal structure of Li2IrSi3 consists of IrSi6 antiprisms connected by Si triangles, giving rise to a three dimensional framework of covalent Si-Si and Si-Ir bonds. Electronic specific-heat in superconducting phase suggests that Li2IrSi3 is a BCS weak-coupling superconductor.

Keywords

superconductivity ternary silicide li2irsi3 critical temperature crystal structure bcs theory weak-coupling

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@article{arxiv.1409.3662,
  title  = {Superconductivity at 3.7 K in Ternary Silicide Li2IrSi3},
  author = {Daigorou Hirai and Rui Kawakami and Oxana V. Magdysyuk and Robert E. Dinnebier and Alexander Yaresko and Hidenori Takagi},
  journal= {arXiv preprint arXiv:1409.3662},
  year   = {2014}
}

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15 pages, 3 figures, 1 table

Superconductivity at 3.7 K in Ternary Silicide Li2IrSi3

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