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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

I think the problem remains open because when a supercrrent slowly decays, the resistivity can remain negligible and diamagnetic signal...

Yesterday, 12:54 AM
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

I looked for any experiments with the supercurrent decay. Nothing found. Therefore the question is open.

Sunday, 10:39 AM
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

We may also modify the experiment. We can create a small non-SC area directly on the ring surface, a point with magnetic field killing...

Oct 2, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

I believe the supercurrent will decay in the experiment. Because the new pairs (created in the wire and diffused toward the ring) never...

Oct 2, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

Anyway, thank you for your answers and doubts. They certainly help to find a better solution to the problem.

Oct 1, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

All basics are derived by the assumption that SC pairs can be created/annihilated below Tc, so all conventional arguments follow from...

Oct 1, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

Moreover, assuming that pairs absorb any thermal energy we must accept that the pairs also emit any thermal energy. That is exactly...

Sep 29, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

Closely to Tc the pair density tends to zero, so the velocity of remaining pairs should strongly increase (in order to keep the current...

Sep 29, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

To solve the problem, I proposed a simple experiment about pair permanency, see...

Sep 29, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

When we guess that the pair density changes abruptly at Tc, then all contradictions vanish. Moreover, observations on metals say - the...

Sep 29, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

The momentum taken by lattice is partially converted into heat, because the lattice is much heavier than electrons. If mv=MV and m<<V...

Sep 29, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

The contradiction is that the newly generated normal electrons slow down due to collisions with the lattice and, thus, transfer their...

Sep 28, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

You wrote - "the newly generated normal conducting electrons need time to loose their current in collisions with the lattice" A...

Sep 27, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

Yes, thank you. Professor Hirsch also noted that generally accepted theories are contradictory.

Sep 26, 2025
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Stanislav replied to the thread A Stability of persistent currents in superconductors regardless of temperature.

Exactly. The angular momentum conservation works in superconductors at warming. Annihilated pairs give their momentum to lattice, and...

Sep 26, 2025

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