On the high-pressure superconducting phase in platinum hydride

D. Szczs̈niak, T. P. Zemła

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19 Citations (Scopus)

Abstract

Motivated by the ambiguous experimental data for the superconducting phase in silane (SiH<inf>4</inf>), which may originate from platinum hydride (PtH), we provide a theoretical study of the superconducting state in the latter alloy. The quantitative estimates of the thermodynamics of PtH at 100 GPa are given for a wide range of Coulomb pseudopotential values () within the Eliashberg formalism. The obtained critical temperature value ( for ) agrees well with the experimental T<inf>C</inf> for SiH<inf>4</inf>, which may be ascribed to PtH. Moreover, the calculated characteristic thermodynamic ratios exceed the predictions of the Bardeen-Cooper-Schrieffer theory, implying the occurrence of strong-coupling and retardation effects in PtH. We note that our results may be of high relevance for future theoretical and experimental studies on hydrides.

Original languageEnglish
Article number085018
JournalSuperconductor Science and Technology
Volume28
Issue number8
DOIs
Publication statusPublished - 1 Aug 2015

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Keywords

  • high-pressure effects
  • superconductors
  • thermodynamic properties

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Ceramics and Composites
  • Materials Chemistry
  • Metals and Alloys

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