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- W137283315 abstract "The recent suggestion, based on the tunneling experiments, that the superconducting transition temperature ${T}_{c}$ of ${mathrm{Nb}}_{3}$${mathrm{Al}}_{0.8}$${mathrm{Ge}}_{0.2}$ is saturated with respect to the variation of the phonon frequencies, is critically examined. This is first done within the McMillan set of ideas concerning the high ${T}_{c}$, which was used in formulating the suggestion. The suggestion is thus shown to be in contradiction with the known pressure dependence of ${T}_{c}$. The observed weak variation of ${T}_{c}$ in the martensitic transition is not explained by the saturation effect but rather by the inefficiency of the low-frequency phonons in building up the superconductivity. It is further pointed out that the models of ${mathrm{Nb}}_{3}X$ compounds, based on the singularity in the electron density of states, are not expected to yield a saturation of ${T}_{c}$ with respect to the phonon frequencies." @default.
- W137283315 created "2016-06-24" @default.
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- W137283315 date "1973-11-01" @default.
- W137283315 modified "2023-10-16" @default.
- W137283315 title "Strong-Coupling Saturation of Superconductivity inNb3Al0.8Ge0.2" @default.
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- W137283315 doi "https://doi.org/10.1103/physrevb.8.4441" @default.
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