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Additional
crystal momentum
English Wikipedia - The Free Encyclopedia
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Crystal momentum
In
solid-state physics
crystal momentum
or quasimomentum is a momentum-like
vector
associated with
electrons
in a
crystal lattice
. It is defined by the associated
wave vectors
of this lattice, according to
(where
is the reduced
Planck's constant
). Like mechanical momentum, crystal momentum is frequently
conserved
, making it useful to physicists and materials scientists as an analytical tool.
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