Abstract
The temperature dependence of the magnetic field penetration depth of superconducting lead and lead-indium alloys has been studied over the temperature range between about 2 K andT c. Data are analyzed in terms of the microscopic theory. The difficulties of a unique analysis of the penetration data are pointed out and a strategy for the best analysis is discussed. The penetration depth atT=0 K for pure lead is determined as 525 Å. This value, though higher than the previously accepted value for lead, is nevertheless consistent with the strong coupling character of lead.
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This work was supported by the Fond National Suisse pour la Recherche Scientifique.
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Egloff, C., Raychaudhuri, A.K. & Rinderer, L. Penetration of a magnetic field into superconducting lead and lead-indium alloys. J Low Temp Phys 52, 163–185 (1983). https://doi.org/10.1007/BF00681271
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DOI: https://doi.org/10.1007/BF00681271