Yambo Community Forum

Dear developers,

Is it possible for me to get the output of the screened Coulomb potential calculated from Random Phase approximation?

I want to use this term to do some further calculations.

Thank you.

Cheers,
R.B

Dear Boachang,
What yambo can store is the (static or dynamical) dielectric matrix \eps^-1_GG' (q). It is stored in the databases ./SAVE/ndb.em1s(d)
You can either read it using the netcdf command ncdump, or put it in a readable file adding write instructions in the code.
It is this the quantity you need? Depending on the components you need it could be a big matrix.
Best,
Daniele

Daniele Varsano wrote:Dear Boachang,
What yambo can store is the (static or dynamical) dielectric matrix \eps^-1_GG' (q). It is stored in the databases ./SAVE/ndb.em1s(d)
You can either read it using the netcdf command ncdump, or put it in a readable file adding write instructions in the code.
It is this the quantity you need? Depending on the components you need it could be a big matrix.
Best,
Daniele

Dear Daniele,

Thank you very much for your response.
I think it is what I want. I will check the file.

By the way, does yambo support the LDA + U now? I am working on strong correlated systems mainly metal oxides. Do you have any suggestions on the possibility of using Yambo to deal with these materials? Thanks a lot.

Sincerely,
Baochang

Dear Baochang,
Unfortunately at the moment Yambo do not support LDA+U calculation, but it is in the list of the next priority, there is people working on it and we hope to have it working in the next releases.

Best,
Daniele