[Wien] need help

[Karel Vyborny]

This recipe should be taken with caution though. It effectively relies on 
a single band picture of transport. In reality, relaxation times can 
(and typically are) different for different bands crossing the Fermi 
level. The plasma frequencies for individual bands should then be weighted 
with these band-dependent relaxation times and total conductivity is the 
sum.

KV


--- x ---
dr. Karel Vyborny
Fyzikalni ustav AV CR, v.v.i.
Cukrovarnicka 10
Praha 6, CZ-16253
tel: +420220318459


On Thu, 21 Jan 2016, Gavin Abo wrote:

> If you have the calculated rho/tau from BoltzTraP, (rho/tau)_calculated, and
> the experimental conductivity, rho_experimental, you could use the equation
> given in the "How can I calculate the conductivity" in the "1.3 Frequently
> Asked Question" section of the BoltzTraP UserGuide to estimate what the tau
> might be, which is
> 
> tau = rho_experimental/(rho/tau)_calculated
> 
> On 1/21/2016 1:10 AM, sikander Azam wrote:
>       Dear All
> How i can obtain the value of tau from my calculated electronic
> conductivity and from the experimental electronic conductivity.
> Regards
> Azam
> 
> 
>