ABINIT Discussion Forums

Dear all
How to find the zero-frequency limit of this expression yields the direct current (DC) conductivity σ_DC
σdc = lim σ1 (ω) , when ω go to zero
We have two columns data of ω vs σ1(ohm.cm)-1, and we want to calculated the σ_DC
I am so sorry because I really don't know it.


Thank you
Abdulmutta

Plot the ac conductivity (i.e. sigma(omega)) versus omega and extrapolate the curve to omega=0. That gives you the dc conductivity.

Cheers,
Vahid