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Unformatted text preview: The gas is called degenerate in this regime, as opposed to in the classical regime already discussed. The chemical potential in general is a function of the temperature. However, we define the chemical potential at a temperature of zero for a fermi gas to be ( = 0) = where is called the Fermi energy. The significance of the Fermi energy is that for , the orbitals of energy are completely occupied and the orbitals above the Fermi energy are completely vacant. This should make sense. A system wants to minimize its total energy, and the fermions would pack into the lowest energy states first. If the temperature is low, there is little thermal excitation to promote any fermions to orbitals with higher energy....
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This note was uploaded on 02/09/2012 for the course PHY PHY2053 taught by Professor Davidjudd during the Fall '10 term at Broward College.
- Fall '10