A theory of superconductivity developed by Bardeen, Cooper, and Schrieffer in 1957. Under certain conditions, attractions between two electrons due to a succession of phonon exchanges can exceed slightly their Coulomb repulsion. The electrons of opposite spin will then be weakly bound together, forming a so-called Cooper electron pair with binding energy
which is responsible for the superconductivity.
Cooper Electron Pair, Phonon, Superconductivity
References
Bardeen, J.; Cooper, L. N.; and Schrieffer, J. R. "Theory of Superconductivity." Phys. Rev. 108, 1175-1204, 1957.
