Crystal momentum
Quantum-mechanical vector property in solid-state physics / From Wikipedia, the free encyclopedia
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In solid-state physics, crystal momentum or quasimomentum is a momentum-like vector associated with electrons in a crystal lattice.[2] It is defined by the associated wave vectors of this lattice, according to
(where is the reduced Planck's constant).[3]: 139 Frequently[clarification needed], crystal momentum is conserved like mechanical momentum, making it useful to physicists and materials scientists as an analytical tool.