SOLID STATE - created from Mind Map

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Make sure you can write down the potential energy, derive the equation of motion and dispersion relaton, and understand the long wavelength limit.

Un(t)=e^(i(kna-wt)

wk=2wd(sin(ka/2))

long lambda limit means wk-->0, no restoring force for uniform translation of all atoms.

g(e) for electrons in 1D, 2D, 3D

Cv using heuristic arguments

Fermi surface and Fermi gas