Abstract
A SUPERCONDUCTOR in its normal state in a magnetic field can be ‘supercooled', in the sense that the field must be decreased some way below its critical value Hc before the transition into the superconducting state occurs. The explanation of this, originally given by London1, is that a boundary between the two phases has a surface energy, which makes the creation of the first nucleus of the superconducting phase energetically difficult.
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References
London, H., Proc. Roy. Soc., A, 152, 650 (1935).
Sixtus and Tonks, Phys. Rev., 37, 930 (1931).
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FABER, T. Creation and Growth of Superconducting Nuclei. Nature 164, 277–278 (1949). https://doi.org/10.1038/164277a0
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DOI: https://doi.org/10.1038/164277a0
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