Superconductivity at 3.7 K in Ternary Silicide Li2IrSi3
arXiv:1409.3662 · doi:10.7566/JPSJ.83.103703
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.
15 pages, 3 figures, 1 table