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arXiv · 1810.08191

Superconductivity of platinum hydride

Takahiro Matsuoka·Masahiro Hishida·Keiji Kuno·Naohisa Hirao·Yasuo Ohishi·Shigeo Sasaki·Kazushi Takahama·Katsuya Shimizu
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Abstract

We report the ac magnetic susceptibility, electrical resistance, and X-ray diffraction measurements of platinum hydride (PtHx) in diamond anvil cells, which reveal its superconducting transition. At 32 GPa, when PtHx is in a P63/mmc structure, PtHx exhibits superconducting transition at 6.7 K and superconducting transition temperature (Tc) decreases with pressure to 4.8 K at 36 GPa. The observed T c is higher than that of powdered Pt by more than three orders of magnitude. It is suggested that hydrides of noble metals have higher Tc than the elements.

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Takahiro Matsuoka, Masahiro Hishida, Keiji Kuno, Naohisa Hirao, Yasuo Ohishi, Shigeo Sasaki, Kazushi Takahama, Katsuya Shimizu. 2018-10-18. Superconductivity of platinum hydride. https://doi.org/10.1103/physrevb.99.144511

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