Magnetic flux expulsion in a superconducting wire

@inproceedings{Hirsch2021MagneticFE,
  title={Magnetic flux expulsion in a superconducting wire},
  author={Jorge E. Hirsch},
  year={2021}
}
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

References

SHOWING 1-10 OF 26 REFERENCES
Electrodynamics of spin currents in superconductors
In recent work we formulated a new set of electrodynamic equations for superconductors as an alternative to the conventional London equations, compatible with the prediction of the theory of holeExpand
On the dynamics of the Meissner effect
The question of how a metal becoming superconducting expels a magnetic field is addressed. It is argued that the conventional theory of superconductivity has not answered this question despite itsExpand
Momentum of superconducting electrons and the explanation of the Meissner effect
Momentum and energy conservation are fundamental tenets of physics, that valid physical theories have to satisfy. In the reversible transformation between superconducting and normal phases in theExpand
Defying Inertia: How Rotating Superconductors Generate Magnetic Fields
I discuss the process of magnetic field generation in rotating superconductors in simply connected and multiply connected geometries. In cooling a normal metal into the superconducting state while itExpand
Explanation of the Meissner effect and prediction of a spin Meissner effect in low and high Tc superconductors
Abstract I argue that the conventional BCS–London theory of superconductivity does not explain the most fundamental property of superconductors, the Meissner effect: how is the Meissner currentExpand
Spin Meissner effect in superconductors and the origin of the Meissner effect
We propose a dynamical explanation of the Meissner effect in superconductors and predict the existence of a spin Meissner effect: that a macroscopic spin current flows within a London penetrationExpand
The Lorentz force and superconductivity
To change the velocity of an electron requires that a Lorentz force acts on it, through an electric or a magnetic field. We point out that within the conventional understanding of superconductivityExpand
Entropy generation and momentum transfer in the superconductor to normal phase transformation and the consistency of the conventional theory of superconductivity
Since the discovery of the Meissner effect the superconductor to normal (S-N) phase transition in the presence of a magnetic field is understood to be a first order phase transformation that isExpand
Do superconductors violate Lenz's law? Body rotation under field cooling and theoretical implications
When a magnetic field is turned on, a superconducting body acquires an angular momentum in direction opposite to the applied field. This gyromagnetic effect has been established experimentally and isExpand
The dc power observed on the half of asymmetric superconducting ring in which current flows against electric field
Abstract The observations the dc voltage on asymmetric superconducting ring testify that one of the ring segments is a dc power source. The persistent current flows against the total electric fieldExpand
...
1
2
3
...