Abstract
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.
Original language | English |
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Article number | 093706 |
Journal | journal of the physical society of japan |
Volume | 83 |
Issue number | 9 |
DOIs | |
Publication status | Published - Sep 15 2014 |
ASJC Scopus subject areas
- Physics and Astronomy(all)