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Electron wavelength in superconductors

  1. Oct 11, 2012 #1
    What is a rough figure for the wavelength of the moving electrons in a superconductor? Or is there no easy answer for that?
  2. jcsd
  3. Oct 11, 2012 #2


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    You have to distinguish between the wavelength of the Cooper pairs and that of the electrons making up the Cooper pairs. The latter have energies near the Fermi-energy and a momentum near the Fermi-momentum [itex]p_F=\hbar k[/itex] and thus [itex] \lambda=2\pi/k [/ itex] a very short wavelength.
    The wavelength of the Cooper pairs is liked to the current j and density n_s of the Cooper pairs as
    [itex] j=2e n_s k [/itex] and is very low.
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