Because of this phenomenon, the flux of a monopole
Because of this phenomenon, the flux of a monopole is concentrated in Abrikosov vortices. Equating the time evolution of the current with a constant times the electric field and taking the curl of both sides allows one to derive a lambda that measures the length scale of this effect. This phenomenon can be derived by noting that the Laplacian of the magnetic field is equal to the magnetic field times the squared reciprocal of the aforementioned lambda, which is also known as the London penetration depth. First explained by the London equations, this phenomenon implies that for relevant materials the magnetic susceptibility is negative one, and hence that those materials display perfect diamagnetism. Sometimes named for Ochsenfeld, for 10 points, name this phenomenon in which a magnetic field is excluded from a superconductor.
Because of this phenomenon, the flux of a monopole is concentrated in Abrikosov vortices.
{Meissner}-Ochsenfeld effect