Spatial Structure of the Cooper Pair

  title={Spatial Structure of the Cooper Pair},
  author={Alan M. Kadin},
  journal={Journal of Superconductivity and Novel Magnetism},
  • A. Kadin
  • Published 11 October 2005
  • Physics
  • Journal of Superconductivity and Novel Magnetism
The Cooper pair is generally analyzed in momentum space, but its real-space structure also follows directly from the Bardeen–Cooper–Schrieffer (BCS) theory. It is shown here that this leads to a spherically symmetrical quasi-atomic wavefunction, with an identical “onion-like" layered structure for each of the electrons constituting the Cooper pair, with charge layers ∼0.1 nm and radius ∼100 nm for a classic BCS superconductor. This charge modulation induces a corresponding charge modulation in… 
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