Decay of supercurrents connected to non-superconducting zones?

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SUMMARY

The discussion centers on the behavior of persistent supercurrents in superconducting (SC) aluminum rings when connected to non-superconducting (non-SC) zones. Specifically, it examines whether a stable SC aluminum ring, maintained below its critical temperature (Tc), will experience suppression of its supercurrent when linked to an aluminum wire in a separate chamber where the temperature exceeds Tc. The lack of definitive experimental evidence and the complexity of the interactions involved make this a challenging question for physicists. The experimental setup is detailed in a referenced research publication.

PREREQUISITES
  • Understanding of superconductivity principles, particularly critical temperature (Tc) and critical magnetic field (Hc).
  • Familiarity with the behavior of Cooper pairs in superconductors.
  • Knowledge of experimental physics methodologies related to superconductivity.
  • Ability to interpret scientific diagrams and experimental setups, as referenced in the linked publication.
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  • Research the effects of temperature and magnetic fields on superconductivity, focusing on critical parameters like Tc and Hc.
  • Explore the dynamics of Cooper pair dissipation in non-superconducting materials.
  • Investigate experimental techniques used to measure supercurrent behavior in superconductors.
  • Review the findings in the publication titled "Tuning of Lifetime of Cooper pairs in a Massive Aluminum Ring" for detailed experimental insights.
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Physicists, materials scientists, and researchers interested in superconductivity, particularly those exploring the interactions between superconducting and non-superconducting materials.

StanislavD
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TL;DR
Will a persistent supercurrent in a superconducting (SC) aluminum ring decay, if we connect the SC aluminum ring to an aluminum wire and the remote end of the wire is located in a separate chamber with T > Tc (or H > Hc)?
This question is more complicated than it seems, most physicists cannot answer it unambiguously and there is no experiments to the issue. Imagine, a persistent supercurrent flows in a SC aluminum ring. Then we connect the SC aluminum ring (without solder) to an aluminum wire, the second end of the wire is in a separate chamber with T > Tc (or H > Hc) and is not SC. The temperature of the SC ring is stable below Tc. Thus the SC ring is directly connected to a non-SC zone where electron pairs dissipate their supercurrent momenta on atom lattice. Will the remote non-SC zone suppress the persistent supercurrent in the SC ring?

Experimental setup to the question is shown in Figure 1 in

https://www.researchgate.net/public...me_of_Cooper_pairs_in_a_Massive_Aluminum_Ring
 
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