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solve eliashberg equations using specific spectral function

Posted: Tue Apr 25, 2017 10:43 pm
by xz82125598
I would like to solve isotropic Eliashberg equations to get energy gaps using some specific Eliashberg spectral function a2f. I don't need to calculate phonon spectrum. Are there any easy way to implement it? If there is, how to set up?

Thanks a lot.

Re: solve eliashberg equations using specific spectral funct

Posted: Thu Apr 27, 2017 5:28 pm
by roxana
Hi,

This is already implemented in the code. You can take a look at the epw_iso.in and epw_iso_real.in in qe-6.1/EPW/tests/Inputs/t05

Best,
Roxana

Re: solve eliashberg equations using specific spectral funct

Posted: Thu Apr 27, 2017 9:29 pm
by xz82125598
roxana wrote:Hi,

This is already implemented in the code. You can take a look at the epw_iso.in and epw_iso_real.in in qe-6.1/EPW/tests/Inputs/t05

Best,
Roxana


Dear Roxana,

Would you please be more specific on how to do this? Like where should the spectral function go? How to change epw_iso.in?
Thanks very much.

Best,
Zhen

Re: solve eliashberg equations using specific spectral funct

Posted: Sat Apr 29, 2017 12:11 pm
by roxana
Hi,

If you already have the Eliashberg spectral function you can use liso together with fial2f variable (their description can be found athttp://epw.org.uk/Documentation/Inputs).

You can make the following changes in the epw_iso.in

ep_coupling = .false.
ephwrite = .false.
fial2f = 'file for eliashberg spectral function'

Roxana