Superconductivity of platinum hydride

Takahiro Matsuoka, Masahiro Hishida, Keiji Kuno, Naohisa Hirao, Yasuo Ohishi, Shigeo Sasaki, Kazushi Takahama, and Katsuya Shimizu
Phys. Rev. B 99, 144511 – Published 15 April 2019
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Abstract

We report the ac magnetic susceptibility, electrical resistance, and x-ray diffraction measurements of PtHx(x1) in diamond anvil cells, that reveal the superconducting transition. At 30 GPa, when PtHx is in a P63/mmc structure, PtHx exhibits the superconducting transition at 7 K. Remarkably, the observed Tc 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 Tc than elements.

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  • Received 18 October 2018
  • Revised 20 February 2019

DOI:https://doi.org/10.1103/PhysRevB.99.144511

©2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Takahiro Matsuoka1,*, Masahiro Hishida2, Keiji Kuno3, Naohisa Hirao4, Yasuo Ohishi4, Shigeo Sasaki1, Kazushi Takahama5, and Katsuya Shimizu5

  • 1Department of Electrical, Electronic and Computer Engineering, Faculty of Engineering, Gifu University, Gifu 501-1193, Japan
  • 2Department of Materials Science and Technology, Gifu University, Gifu 501-1193, Japan
  • 3Environmental and Renewable Energy Systems Division, Gifu University, Gifu 501-1193, Japan
  • 4Japan Synchrotron Radiation Research Institute (JASRI), Hyogo 679-5198, Japan
  • 5Center for Science and Technology under Extreme Conditions, Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan

  • *Present address: Joint Institute for Advanced Materials (JIAM), The University of Tennessee, Knoxville, Tennessee 37996, USA; TKMatsuoka08@gmail.com/tmatsuok@utk.edu

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Issue

Vol. 99, Iss. 14 — 1 April 2019

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