[QE-users] alpha^2F (w) and lambda (w)

Elio Physics Elio-Physics at live.com
Tue May 29 15:02:06 CEST 2018

Dear Mitsuaki,

Thanks for your reply.  I just want to add more question regards the points produced by kpoints.x needed for the lambda.x execution. I have some q grids that have 7, 13 ,21 or even 43 points . How can I produce 7, 13, 21 and 43 points using kpoints.x ? Is it legitimate to say , in the case of 7, produce 9 points and take off two of them?

Once again, thanks in advance.

From: users <users-bounces at lists.quantum-espresso.org> on behalf of Mitsuaki Kawamura <mkawamura at issp.u-tokyo.ac.jp>
Sent: Tuesday, May 29, 2018 12:19 AM
To: 'Quantum Espresso users Forum'
Subject: Re: [QE-users] alpha^2F (w) and lambda (w)

Dear Elio

1- lambda(w) (The integration of alpha2F) is not computed in matdyn.x.
Please integrate alpha2F(w) manually.

2- To plot it with gnuplot, you have to modify that file as each frequency
has single line.
For plotting it with gnuplot, you have to modify that file to write each
frequency in a single line.
That file format will be changed in the next release.

Best regards,
Mitsuaki Kawamura

Dr. Mitsuaki Kawamura
Ozaki Laboratory
The Institute for Solid State Physics, Kashiwa, Japan
e-mail : mkawamura at issp.u-tokyo.ac.jp

From: users <users-bounces at lists.quantum-espresso.org> On Behalf Of Elio
Sent: Monday, May 28, 2018 9:19 AM
To: Quantum Espresso users Forum <users at lists.quantum-espresso.org>
Subject: [QE-users] alpha^2F (w) and lambda (w)

Dear all, I am trying to plot The Eliashberg function and the electron
phonon parameter in terms of the frequencies. I know that matdyn.x produces
these two files and that alpha^2F data is found in a2FDos.X files .

1- Where can I find the lambda (w) information?

2- How can I plot these graphs? The file is not suitable to be plot in

Any help would be appreciated. Thanks


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