Posted by Steve Simon on May 27, 2014, 4:53 pm, in reply to "Dependence conductivity of temperature"
|
It probably depends on the particular physical system you are considering,but yes, scattering time does depend on T. In many systems that are doped, at low temperature (but above freezeout temperature) the electron density is essentially constant and the scattering time is what determines the conductivity. Typically the scattering is caused by thermally excited phonons bumping into electrons, so as the temperature is lowered, there are fewer phonons and hence the conductivity increases. |
| 21 |
|
Message Thread
|
