Superconductivity in noncentrosymmetric iridium silicide Li2IrSi3

Sunseng Pyon, Kazutaka Kudo, Jun Ichi Matsumura, Hiroyuki Ishii, Genta Matsuo, Minoru Nohara, Hajime Hojo, Kengo Oka, Masaki Azuma, V. Ovidiu Garlea, Katsuaki Kodama, Shin Ichi Shamoto

研究成果: Article同行評審

26 引文 斯高帕斯(Scopus)

摘要

The effects of lithium absorption on the crystal structure and electronic properties of IrSi 3, a binary silicide with a noncentrosymmetric crystal structure, were studied. X-ray and neutron diffraction experiments revealed that hexagonal IrSi3 (space group P63mc) transforms into trigonal Li2IrSi3 (space group P31c) upon lithium absorption. The structure of Li2IrSi 3 is found to consist of a planar kagome network of silicon atoms with Li and Ir spaced at unequal distances between the kagome layers, resulting in a polar structure along the c-axis. Li2IrSi3 exhibited type-II superconductivity with a transition temperature Tc of 3.8 K, displaying a structure type that no previous superconductors have been reported to have.

原文English
文章編號093706
期刊Journal of the Physical Society of Japan
83
發行號9
DOIs
出版狀態Published - 2014 九月 15

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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