Superconductivity of platinum hydride

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.

References in corpus (7)

• Evidence for superconductivity above 260 K in lanthanum superhydride at megabar pressures
• Unexpected stable stoichiometries of sodium chlorides
• Anharmonic free energies and phonon dispersions from the stochastic self-consistent harmonic approximation: application to platinum and palladium hydrides
• Formation of transition metal hydrides at high pressures
• Predicted formation of superconducting platinum-hydride crystals under pressure in the presence of molecular hydrogen
• Superconductivity at 17 K in Yttrium Metal under Nearly Hydrostatic Pressures to 89 GPa
• Inter- and Intragranular Effects in Superconducting Compacted Platinum Powders

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• Pressure-induced high temperature superconductivity in H3X (X=As, Se, Br, Sb, Te and I)
• Hydrogen (deuterium) dynamics and thermal stability in ion-irradiated platinum-hydride thin films synthesized at low temperature