Quantum Model of Tight-Binding Electrons in Crystal

4 Quantum Model of Tight-Binding Electrons in Crystal 

Once again a crystal is a compound of atoms or assemblies of atoms ordered in space this because the atoms and the atomic orbital are the quantum fundament of the compounds of the super-atomic (yet nano-) matter. 

FIGURE 3.24 Extended quantification (left) of the eigen-eneigies of the bonding electrons of a crystal and their reduction to the first Brillouin zone (right) after (Further Readings on Quantum Solid 1936-1967 Putz, 2006). 

Quantum Nanochemistry—Volume IV Quantum Solids and Orderability 

the atomic orbital must be considered as a quantum basis also for the description of the electrons in crystals. 

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