Abstract
UNTIL recently it was generally assumed that it was possible to predict, by the ordinary electromagnetic equations, the persistent current produced in a supraconductor cooled below the transition point in a constant external magnetic field after the field was switched off. Thus H. A. Lorentz1 calculated the current induced in a supraconducting sphere, that is, the effective magnetic dipole when an external magnetic field is established.
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References
Comm. Leiden, Suppl., Nr. 50 b, 1924.
Naturwiss, 21, 787; 1933.
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MENDELSSOHN, K., BABBITT, J. Persistent Currents in Supraconductors. Nature 133, 459–460 (1934). https://doi.org/10.1038/133459b0
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DOI: https://doi.org/10.1038/133459b0
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