Abstract
We have determined the effect of hydrostatic pressureP on the superconducting transition temperatureT c of bulk, A15 Nb3Si. For 0≤P≤20 kbar (2 GPa),T c decrease linearly with increasing pressure at a rate ∂T c/∂P=−2.67×10−5 K/bar. From an estimate of ∂T c/∂P obtained using recent band structure calculations for the density-of-electronic-states change as a function of lattice parameter in Nb3Si, we conclude that the pressure dependence of the electron-phonon interaction primarily determines ∂T c/∂P.
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Work performed under the auspices of the U.S. DOE.
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Lim, K.C., Thompson, J.D., Olinger, B. et al. Superconductivity in bulk A15 Nb3Si under pressure. J Low Temp Phys 45, 575–580 (1981). https://doi.org/10.1007/BF00654500
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DOI: https://doi.org/10.1007/BF00654500