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define relaxation time of free electron??

define relaxation time of free electron??

Grade:upto college level

1 Answers

Mukesh Sharma
askIITians Faculty 43 Points
8 years ago
The characteristic time for a distribution of electrons in a solid to approach or “relax” to equilibrium after a disturbance is removed. A familiar example is the property of electrical conductivity, in which an applied electric field generates an electron current which relaxes to an equilibrium zero current after the field is turned off. The conductivity of a material is directly proportional to this relaxation time; highly conductive materials have relatively long relaxation times.
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Mukesh Sharma
AskIITians Faculty

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