EPW Forum

Dear all,

I was wondering if it was possible in epw to select a phonon mode (branch index) when calculating the electron-phonon self energy (last equation here: http://epw.org.uk/Documentation/Electron-phononCoupling) in order to distinguish the individual contributions?

I looked through the docs but I am not sure if the "cumulative" method does this:



Thanks for your help as always!

Best,
Chris

Dear Chris,

The cumulant expansion is a method for calculating the spectral function.
If you want to see the contribution of different phonon modes to the e-ph self-energy, you can set verbosity=3.
Beware that this will only follow the phonon mode index, rather than the actual nature of the phonon branch.

Best
Carla

Mille grazie Carla, that is exactly what I want!

Best,
Chris