Where Does the Energy for Screening Current in Superconductors Come From?

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The discussion centers on the energy source for screening currents in superconductors when cooled below their critical temperature (Tc). It is established that the initial energy for the screening current originates from the magnetic field applied prior to cooling. If no magnetic field is present, the energy is derived from the thermal energy expended during the cooling process. This highlights the interplay between magnetic fields and thermal dynamics in superconducting materials.

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sniffer
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suppose we have a superconductor speciment above Tc, and we put it in magnetic field. then we cool it down to below Tc, then a screening current is produced.

where does the electron get the energy to initiate the current on the first time?
 
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Magnetic field. If not, then the energy it gets is from the energy you used to cool it down.
 

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