[Pw_forum] about Tc calculation

[Thomas Brumme]

Dear Surender,

I'm not an expert and I can only guess, but I think that this passage 
from the user manual might be important for you:

The electron-phonon coefficients are calculated using several
values of Gaussian broadening (see PHonon/PH/elphon.f90) because this 
quickly
shows whether results are converged or not with respect to the
k-point grid and Gaussian broadening.

So, the same number of broadenings is then used to calculate Tc and in 
principle these values of Tc shouldn't change to much if your k- and 
q-point grids are fine enough... Yet, I can't remember where one sets 
the nsig parameter.
Can you please provide your input and the relevant output of the 
different Tc?

Regards

Thomas


On 29.11.2017 05:04, surender at iitk.ac.in wrote:
> Dear all,
>
> I have calculated Tc for my binary systems for that I performed lambda.x
> and I got 10 values in lambda.out file.
> Now my question is which value of Tc I should take out of 10 values.
>
> Thank you in advance.
>
> Regards
> Surender
> IIT Kanpur
> INDIA
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-- 
Dr. rer. nat. Thomas Brumme
Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry
Leipzig University
Phillipp-Rosenthal-Strasse 31
04103 Leipzig

Tel:  +49 (0)341 97 36456

email: thomas.brumme at uni-leipzig.de