A technical problem regrading a figure on EPW website

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hellolori
Posts: 26
Joined: Mon Dec 18, 2017 5:19 am
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A technical problem regrading a figure on EPW website

Post by hellolori »

Dear all,

I found a nice figure on the EPW website (also the same as Figure 2b of [PRB 90, 014518 (2014)] ):
http://epw.org.uk/Documentation/Documentation

In the panel (b) of the figure, the author decomposed the total Eliashberg spectrum into different contributions from intra-band and inter-band scattering. I would like to know how to do that, since I can not find the corresponding answer from the tutorials of EPW.

Can anyone help me?

Best regards!

sponce
Site Admin
Posts: 616
Joined: Wed Jan 13, 2016 7:25 pm
Affiliation: EPFL

Re: A technical problem regrading a figure on EPW website

Post by sponce »

Hello hellolori,

Roxana (the author of the paper) is on easter holiday. She might reply when she come back.

However I think there are no easy way to get this. You have to go in the code and probably select the range of band you want to add to get the total contribution.

Best,
Samuel
Prof. Samuel Poncé
Chercheur qualifié F.R.S.-FNRS / Professeur UCLouvain
Institute of Condensed Matter and Nanosciences
UCLouvain, Belgium
Web: https://www.samuelponce.com

roxana
Posts: 172
Joined: Fri Jan 22, 2016 6:48 pm
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Re: A technical problem regrading a figure on EPW website

Post by roxana »

Hi,

To obtain the plot shown in the paper I modified the code to consider the states within a radius around the Gamma-point as being NFE bands and the bands outside the radius as being pi-bands. For example, to extract the pi-pi interaction, the e-ph matrix elements g2 around the Gamma-point were made zero (inside the defined radius).

Hope this helps.

Best,
Roxana
Roxana Margine
Associate Professor
Department of Physics, Applied Physics and Astronomy
Binghamton University, State University of New York

hellolori
Posts: 26
Joined: Mon Dec 18, 2017 5:19 am
Affiliation:

Re: A technical problem regrading a figure on EPW website

Post by hellolori »

Thank you all of you very much, I think I have work out the problem.

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