Abstract
We report the ac magnetic susceptibility, electrical resistance, and x-ray diffraction measurements of in diamond anvil cells, that reveal the superconducting transition. At 30 GPa, when is in a structure, exhibits the superconducting transition at 7 K. Remarkably, the observed is higher than that of powdered Pt by more than three orders of magnitude. It is suggested that the noble metals in the periodic table of elements possibly form a region where hydrides have higher than elements.
- Received 18 October 2018
- Revised 20 February 2019
DOI:https://doi.org/10.1103/PhysRevB.99.144511
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