Materials Science: Unit II(a): Electrical Properties of Materials
Fermi-Dirac Statistics
Definition, Formula
Fermi - Dirac statistics deals with the particles having half integral spin like electrons. They are known as Fermi particles or Fermions.
FERMI-DIRAC STATISTICS Fermi - Dirac statistics deals with the particles having half integral spin like electrons. They are known as Fermi particles or Fermions. Fermi distribution function gives the distribution of electrons among the various energy levels as a function of temperature. It is a probability function F(E) of an electron occupancy for a given energy level at absolute temperature. It is given by where E - Energy of the level whose occupancy is being considered EF - Fermi energy level k - Boltzmann's constant T - Absolute temperature The probability value F(E) lies between 0 and 1. • If F(E) = 1, the energy level is occupied by an electron. • If F(E) = 0, the energy level is vacant ie., it is not occupied by the electron. • If F(E) = 0.5 or 1/2, then there is a 50% chance for the electron occupying in that energy level.Definition
Materials Science: Unit II(a): Electrical Properties of Materials : Tag: : Definition, Formula - Fermi-Dirac Statistics
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