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Updated: Mar 1, 2026

Determination of Thermodynamic Properties of Alkaline Earth-liquid Metal Alloys Using the Electromotive Force Technique
Published on: November 3, 2017
Superconductivity in Alkaline Earth Metal-Filled Skutterudites BaxIr4X12 (X = As, P)
Yanpeng Qi1, Hechang Lei1, Jiangang Guo1
1Materials Research Center for Element Strategy, Tokyo Institute of Technology , 4259 Yokohama, Japan.
Abstract:
We report superconductive iridium pnictides BaxIr4X12 (X = As and P) with a filled skutterudite structure, demonstrating that Ba filling dramatically alters their electronic properties and induces a nonmetal-to-metal transition with increasing the Ba content x. The highest superconducting transition temperatures are 4.8 and 5.6 K observed for BaxIr4As12 and BaxIr4P12, respectively. The superconductivity in BaxIr4X12 can be classified into the Bardeen-Cooper-Schrieffer type with intermediate coupling.
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