Abstract
WE have recently completed an investigation of the magnetic threshold fields for thin superconducting films of mercury. The extended magnetic transition curves described in a previous communication1 have been removed by using in place of a strip of film a circular disk with embedded current and potential leads. In this way, effects due to the diminishing thickness of the film at the edges of a strip are eliminated.
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References
Appleyard and Misener, NATURE, 142, 474 (1938).
London, F. and London, H., Proc. Roy. Soc., A, 149, 71 (1935).
Gorter and Casimir, Phys. Z., 35, 965 (1934).
Pontius, Phil. Mag., 24, 787 (1937).
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APPLEYARD, E., BRISTOW, J. & LONDON, H. Variation of Field Penetration with Temperature in a Superconductor. Nature 143, 433–434 (1939). https://doi.org/10.1038/143433a0
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DOI: https://doi.org/10.1038/143433a0
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