Superconductivity in Noncentrosymmetric Iridium Silicide Li2IrSi3
| Autor: | Pyon, S., Kudo, K., Matsumura, J., Ishii, H., Matsuo, G., Nohara, M., Hojo, H., Oka, K., Azuma, M., Garlea, V. O., Kodama, K., Shamoto, S. |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | J. Phys. Soc. Jpn. 83, 093706 (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.7566/JPSJ.83.093706 |
| Popis: | The effects of lithium absorption on the crystal structure and electronic properties of IrSi3, a binary silicide with a noncentrosymmetric crystal structure, were studied. X-ray and neutron diffraction experiments revealed that hexagonal IrSi3 (space group P6_3mc) transforms into trigonal Li2IrSi3 (space group P31c) upon lithium absorption. The structure of Li2IrSi3 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. Comment: 5 pages, 5 figures, 1 table |
| Databáze: | arXiv |
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