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It proposes that electrons with opposite spin can become paired (Cooper pairs).
In many superconductors, the attractive interaction between electrons, which is necessary for pairing is brought about indirectly by the interaction between the electrons and the vibrating crystal lattice.
The resistance of a superconductor drops to zero when the material is cooled below its critical temperature and they repel a magnetic field, which causes magnets to levitate above a superconductor surface (Meissner effect).
Meissner effect – is the expulsion of a magnetic field from a superconductor. Walther Meissner and Robert Ochsenfeld conducted an experiment in which they found that below superconducting transition temperature, the specimens (tin and lead) became perfected diamagnetic, cancelling all flux inside...
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