Brillouin Zone of a 2D Square Lattice: Tight Binding Approximation
Brillouin Zone of a 2D Square Lattice: Tight Binding Approximation
This Demonstration considers the Brillouin zone (BZ) -band dispersion relations for a two-dimensional square crystal lattice under the tight binding approximation. Plots are shown for the first energy -band dispersion in the first and extended Brillouin zones. You can compare the parabolic dispersion curves of free electrons in free space and the linear dispersion curves of Dirac-electrons (as in graphene at -points).
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