# [Pw_forum] Query on "e-ph coupling"

Paolo Giannozzi giannozz at democritos.it
Wed Nov 9 10:42:40 CET 2011

On Tue, 2011-11-08 at 12:06 -0500, Ajit Vallabhaneni wrote:

> I had recently gone through the tutorials on e-ph coupling for Al.
>  I am able to get the values of lambda and gamma from the program
> but it was not clear to me how to get the value of the matrix element
>  "g" from that.

if you are referring to the matrix element of the electron-phonon
coupling, <\psi|dV/du|\psi>, you have to go inside the code to get it

P.
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Paolo Giannozzi, IOM-Democritos and University of Udine, Italy