[Pw_forum] how can I read fildv (variational scf potential) after phonon calculation?

Jing Wang ffyuyuzaoa at gmail.com
Sat Dec 13 21:15:47 CET 2014

Hi everyone,

I'm new to Quantum Espresso and want to calculate el-ph matrix element. But
then I need to get the first order derivative of scf Potential (dVscf/du)
and I believe that's written in the fildv file by QE during ph.x, but I
can't read the file (they are just weird symbols) so I want to know if
there is any method I can take to interpret that data into readable files
in the format of cofficients of plane waves with  G vectors like what the
pw2casino does to the .wfc file.

Thanks for any suggestions!

Jing Wang
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