Harrison, Walter A. Department of Applied Physics, Stanford University, Stanford, California.
Last reviewed:June 2020
- Nearly free electrons
- Determination from experiments
- Related Primary Literature
- Additional Reading
The surface in the electronic wavenumber space of a metal that separates occupied from empty states. Every possible state of an electron in a metal can be specified by the three components of its momentum, or wavenumber. The name derives from the fact that half-integral spin particles, such as electrons, obey Fermi-Dirac statistics and at zero temperature fill all levels up to a maximum energy called the Fermi energy, with the remaining states empty. See also: Fermi-Dirac statistics
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