A theory of superconductivity formulated by John Bardeen, Leon Cooper, and Robert Schrieffer. It explains the phenomenon in which a current of electron pairs flows without resistance in certain materials at low temperatures. ... It is this weak, indirect attraction that binds the electrons together, into a Cooper pair.

How does BCS theory explain the origin of superconductivity?

A theory of superconductivity formulated by John Bardeen, Leon Cooper, and Robert Schrieffer. It explains the phenomenon in which a current of electron pairs flows without resistance in certain materials at low temperatures. ... It is this weak, indirect attraction that binds the electrons together, into a Cooper pair.

How do Cooper pairs explain superconductivity?

The behavior of superconductors suggests that electron pairs are coupling over a range of hundreds of nanometers, three orders of magnitude larger than the lattice spacing. Called Cooper pairs, these coupled electrons can take the character of a boson and condense into the ground state.