London Meissner Slab Screening
Solve static magnetic penetration and the paired screening currents of a superconducting slab.
Free theory articleSolve static magnetic penetration and the paired screening currents of a superconducting slab.
Concept & interpretation
The Meissner effect describes the expulsion of a magnetic field from a superconductor. When a magnetic field is applied tangentially to a superconducting slab, screening currents arise to cancel the magnetic field inside the material, causing the field to decay exponentially from the surface. This is the equilibrium Meissner response, not a frequency-dependent skin effect.
Experiment
We can observe the Meissner screening response using the London Meissner Slab Screening module.
- Set the Penetration length to 1.
- Set the Half thickness to 2.
- Set the Position fraction to 0.5.
- Observe the Relative field value matches the calculated 0.41015427200459836.
- Observe the Normalized screening current matches -0.3123710965989933.