On the high-pressure superconducting phase in platinum hydride

الأصل · EN

Motivated by the ambiguous experimental data for the superconducting phase in silane (SiH₄), which may originate from the 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 the Coulomb pseudopotential values (μ*) within the Eliashberg formalism. The obtained critical temperature value (TC∈<12.94, 20.01> for μ*∈<0.05,0.15>) agrees well with the experimental TC for SiH₄ which may be ascribed to PtH. Moreover, the calculated characteristic thermodynamic ratios exceed the predictions of the Bardeen-Cooper-Schrieffer theory, implying occurrence of the strong-coupling and retardation effects in PtH. We note that our results can be of high relevance for the future studies on hydrides.