[Pw_forum] A question about elelectron-phonon coupli ng

[Paolo Giannozzi]

On Friday 21 April 2006 08:36, luch001 wrote:

> I use the version 2.1.5 of pwscf. When I calculate the electron-phonon
> coupling constant of  the LiH. I calculate 47 k points in the IBZ.The
> output file lambda.dat is like this:
> [...] 
> My question is why the  lambda has some value while the  
> int alpha2F are totally zero. Any comments will be appreciated.

with so little information available it is hard to offer any meaningful
comment. Please look inside the lambda.f90 code: it is trivial and 
to check what is happening there.
-- 
Paolo Giannozzi             e-mail:  giannozz at nest.sns.it
Scuola Normale Superiore    Phone:   +39/050-509876, Fax:-563513 
Piazza dei Cavalieri 7      I-56126 Pisa, Italy