A systematic structure search in the Ce-H system under pressure reveals novel stable phases with intriguing electronic properties. Several cerium hydrides, CeH, CeH, and CeH, were found to be dynamically stable. Electron-phonon calculations coupled to Bardeen-Cooper-Schrieffer arguments indicate that they might be high- superconductors. In particular, the maximum values for -CeH and -CeH are 142 K and 168 K at 94 GPa. These findings may pave the way for achieving room temperature superconductors in dense hydrogen-rich compounds.
Predicted high-temperature superconductivity in cerium hydrides at high pressures
Bin Li, Zilong Miao, Lei Ti, Shengli Liu, Jie Chen, Zhixiang Shi, Eugene Gregoryanz; Predicted high-temperature superconductivity in cerium hydrides at high pressures. J. Appl. Phys. 21 December 2019; 126 (23): 235901. https://doi.org/10.1063/1.5130583
Download citation file: