16. Notes about Solid State Physics

16.1. Crystals

Primary lattice vectors, \(\mathbf{a}_j\), defines periodicity (and symmetry) of the lattice,…

$\(f(\mathbf{r}) = f \left( \mathbf{r} + \sum_j n_j \mathbf{a}_j \right) \ ,\)

with \(n_j \in \mathbb{Z}\).

16.1.1. Bloch’s theorem

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