期刊
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
卷 28, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-2048/28/8/085018
关键词
superconductors; thermodynamic properties; high-pressure effects
Motivated by the ambiguous experimental data for the superconducting phase in silane (SiH4), 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 (mu*) within the Eliashberg formalism. The obtained critical temperature value (T-C is an element of < 12.94, 20.01 > for mu* is an element of < 0.05, 0.15 >) agrees well with the experimental T-C for SiH4, 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.
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