Empty lattice approximation: Difference between revisions

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The '''Empty Lattice Approximation''' is a theoretical [[electronic band structure]] model in which the '''periodic potential''' of the crystal lattice is defined not more precisely than "periodic" and it is assumed that the potential is '''weak'''. The Empty Lattice Approximation is a description of the properties of electrons in an [[Fermi gas|electron gas]] of non-interacting [[Free electron model|'''free electrons''']] that move through a weak periodic potential of a '''[[crystal structure]]'''. The energy of the electrons in the "empty lattice" is the same as the energy of free electrons. The model mainly serves to illustrate a number of concepts which are fundamental to all electronic band structure phenomenastructures.

==Scattering and periodicity==