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Electrons vs Cooper Pairs
Occupying Energy Levels
Quantum particles fill energy levels differently depending
upon a property they possess known as spin. If they possess half-integer
spin they will obey Fermi-Dirac statistics. If the particles have integer
spin, they obey Bose-Einstein statistics.
Spin e.g. electrons
Spin e.g. Cooper pairs
Applying an Electric Field:
Metals vs Superconductors
When an electric field is applied to materials, the
electrons within it will aquire momentum. However, free electrons and
Cooper pairs do this in a different way.
e.g. Cooper pairs
Origin of the energy gap
One of the defining characteristics of superconductors
is the fact that they have a gap between the filled and unfilled states
in their band structure.