1. Crystal structure and superconducting properties of Sc5Ir6Sn18
- Author
-
Manuel Feig, Roman Gumeniuk, Vadim Dyadkin, Volodymyr Levytskyi, Lev Akselrud, Andreas Leithe-Jasper, Walter Schnelle, and Dmitry Chernyshov
- Subjects
Superconductivity ,Physics ,Condensed matter physics ,Group (mathematics) ,Computer Science::Information Retrieval ,Astrophysics::Instrumentation and Methods for Astrophysics ,Computer Science::Computation and Language (Computational Linguistics and Natural Language and Speech Processing) ,Electronic structure ,Crystal structure ,Condensed Matter Physics ,Space (mathematics) ,Condensed Matter::Superconductivity ,X-ray crystallography ,Computer Science::General Literature ,Diamagnetism ,General Materials Science ,Heat capacity ratio - Abstract
Sc5Ir6Sn18 crystallizes with a split variant of the Tb5Rh6Sn18 structure type (space group I41/acd, [Formula: see text] [Formula: see text], [Formula: see text] [Formula: see text]). DFT calculations confirmed the instability of the structural arrangement with the fully occupied and unsplit crystallographic sites. High quality single crystals were grown from a Sn melt. Sc5Ir6Sn18 is a diamagnetic metal showing a superconducting transition at a critical temperature [Formula: see text] K. The relatively low critical magnetic field [Formula: see text] 3.2 T as well as the obtained values of the specific heat ratio [Formula: see text] and energy-gap ratio [Formula: see text] suggest this system to be a weakly coupled BCS-like superconductor.
- Published
- 2019