Magnetic flux expulsion in a superconducting wire

  title={Magnetic flux expulsion in a superconducting wire},
  author={Jorge E. Hirsch},
An electric current generates a magnetic field, and magnetic fields cannot exist in the interior of type I superconductors. As a consequence of these two facts, electric currents can only flow near the surface of a type I superconducting wire so that the self-field vanishes in the interior. Here we examine how an electric current flowing through the entire cross-section of a normal conducting wire becomes a surface current when it enters a superconducting portion of the wire. This geometry… Expand


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