EPW Forum

Hello dear experts and users
I saw in different articles the plot of the electron-phonon coupling strength on the fermi surface, there is any possibility to do it with epw, there is any file with cube extension can i plot i like what i do with fermi surface

Thanks a lot
best regard

Hi ilias-serifi,

Yes, you can easily do this.
1. You need *bandXX.cube (XX is band index) files to plot Fermi surface using VESTA, and it can be obtained by using 'fermi_plot = .true.' flag in your input.
2. You need *lambdaXX.cube files, to color the Fermi surface by lambda, and it is obtained by using 'eliashberg = .true.' flag in your input.

Note: Both (1) and (2) runs should be in the same k-mesh. If you have already done a superconductivity calculation, you might have *lambdaXX.cube files written, please check it.

To color lambda on FS using VESTA, please see this video after 17:03;
https://www.youtube.com/watch?v=7jZ-C5FNfgU

Happy EPWing,
Hari