Madelung sum: M = Σ_shells (±n_k / r_k) for ionic-solid cohesive energy

Layer 2 — Chemistryin the solid-state-chemistry subtree

Framework for ionic-solid cohesive-energy computation: the Madelung sum M (Madelung 1918) gives the per-ion-pair electrostatic energy of an infinite ionic lattice in units of the nearest-neighbour Coulomb energy. Definition: M = Σ_j…

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Crystal structure
Unit cell
Bravais lattice
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