Content deleted Content added
Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.9.2) (Whoop whoop pull up - 11076 |
m clean up spacing around commas and other punctuation fixes, replaced: ,E → , E, ,R → , R |
||
Line 1:
{{short description|Theoretical electronic band structure model in which the potential is periodic and weak}}
{{Electronic structure methods}}
The '''empty lattice approximation''' is a theoretical [[electronic band structure]] model in which the potential is ''periodic'' and ''weak'' (close to constant). One may also consider an empty{{clarify|is there actually some lattice that is "empty"?|date=November 2014}} irregular lattice, in which the potential is not even periodic.<ref>Physics Lecture Notes. P.Dirac, Feynman, R.,1968. Internet, Amazon,25.03.2014.</ref> The empty lattice approximation describes a number of properties of energy dispersion relations of non-interacting [[Free electron model|free electrons]] that move through a [[crystal structure|crystal lattice]]. The energy of the electrons in the "empty lattice" is the same as the energy of free electrons. The model is useful because it clearly illustrates a number of the sometimes very complex features of energy dispersion relations in solids which are fundamental to all electronic band structures.
__TOC__
| |||