Matthiessens rule

ρ: Resistivity
ρP: Phonon contribution of resistivity
ρD: Defect contribution of resistivity

Category:Solid state physics
Description:The resistivity in a metal is composed by a defect governed part and a temperature dependent phonon governed part.

See also:
Mobility of electrons
Relaxation time
Conductivity of semiconductors
Intrinsic charge carrier density of semiconductors
Law of mass action in semiconductors
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