Electron wavelength in superconductors

[gildomar]

What is a rough figure for the wavelength of the moving electrons in a superconductor? Or is there no easy answer for that?

 

[DrDu]

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 $p_F=\hbar k$ and thus [itex]\lambda=2\pi/k [/ itex] a very short wavelength. <br /> The wavelength of the Cooper pairs is liked to the current j and density n_s of the Cooper pairs as <br /> $j=2e n_s k$ and is very low.[/itex]