Tight binding

Tight binding is a fundamental model in condensed matter physics and solid state physics that is used to describe the electronic structure of solids. The tight binding model focuses on the behavior of electrons in a crystal lattice, particularly how their wave functions are influenced by the periodic potential created by the lattice. ### Key Concepts: 1. **Lattice Structure**: In the tight binding model, the material is represented as a lattice of atoms, each of which has a discrete number of occupied electronic states.