TRANSPORT AT
THE F/S INTERFACE
AND
ANDREEV REFLECTION
F S F S
Incident Reflected Cooper
Electron Hole Pair
In
order for a spin-up electron to enter the superconductor (for eV < Eg)
it must bring with it a spin-down electron and enter as a Cooper Pair.A
spin-up hole is "Andreev Reflected" into the ferromagnetic material.