513.001 Molecular and Solid State Physics

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Physical
Constants

Periodic System
of Elements

      

GaAs

GaAs is a semiconductor with an fcc Bravais lattice. There are two atoms in the basis.

(a) What does the first Brillouin zone look like?

(b) Draw approximately the phonon dispersion relation for GaAs along L-Γ-X.

(c) Draw approximately the electron dispersion relation for GaAs along L-Γ-X.