Superconductivity and magnetism

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Discussion Overview

The discussion centers on the relationship between superconductivity and magnetism, particularly whether superconductivity violates Maxwell's equations and the behavior of magnetic fields in super-cooled magnets. It encompasses theoretical aspects and material properties related to superconductivity.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions whether the influence of certain objects on magnets when super-cooled violates Maxwell's equations.
  • Another participant explains that superconductivity is a quantum effect and that Maxwell's equations describe fields, while material properties are incorporated through auxiliary equations.
  • A participant inquires about the behavior of the magnetic field of a super-cooled magnet, suggesting a curiosity about the transition between states.
  • It is noted that magnetic substances do not become superconductors when cooled and lose their ferromagnetic properties in the superconductive regime.
  • Some participants mention exotic materials where ferromagnetism and superconductivity coexist, indicating that the mechanisms behind this coexistence are still under debate.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between superconductivity and magnetism, particularly regarding the behavior of magnetic fields and the conditions under which materials transition between states. The discussion remains unresolved with multiple competing perspectives.

Contextual Notes

There are limitations regarding the assumptions made about the behavior of magnetic fields in superconductors and the definitions of superconductivity and ferromagnetism, which are not fully explored in the discussion.

vincejones
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Certain objects are able to influence the behavior of magnets when super-cooled. Does this violate Maxwells equations?
 
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I appreciate the quick response. What happens to the magnetic field of a super-cooled magnet?
 
vincejones said:
I appreciate the quick response. What happens to the magnetic field of a super-cooled magnet?

Magnetic substances don't become superconductors when cooled, or at least, they loose their ferromagnetic properties when transitioning into the superconductive regime.
 

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