Phonon Calculation

[martinspenke]

Dear all,

is phonon calculation possible with yambo ?
And if yes, by which command can i generate el-ph databases ndb.elph_gkkp_fragment ?

Best wishes
Martin

[Daniele Varsano]

Dear Martin,
the issue with qe-5.1.1 should be fixed.
Please have a look to this thread:

viewtopic.php?f=7&t=458#p4349


Best,
Daniele

[martinspenke]

Dear all,

How can one generate electron phonon coupling matrix elements to be found later by ypp_ph?
Unfortunately the tutorial doesn't tell any thing about the generation of phonon database.
And the input files contain no ph.in phonon file !
Bests
Martin

[Palummo Maurizia]

dear Martin

we really apologize for not providing enough information on the tutorial.
We hope to have soon a new tutorial and include a new stable version of the e-ph calculation in the gpl version of yambo.
In the meanwhile, maybe you could become familiar with the e-ph tutorials of ph.x, you can find on the web ,
the procedure to obtain the matrixelments for yambo is essentially based on that.

Best

Maurizia

[martinspenke]

Dear Maurizia,
Thank you very much for your reply.

I just wanted to know whether QE 5.1.1 still needs a specific yambo patch file
like for QE 4.0.5 for phonon calculations or is this already contained in QE 5.1.1 ?

Best wishes
Martin

[Daniele Varsano]

Dear Martin,
We have opened asubforum concerning electron-phonon calculation were you can post there problem you are facing and where we will be posting news about the ongoing development of the interfaces with Quantum Espresso as weil as technical and methodological informations about how to use the code.

Best,

Daniele