[Pw_forum] Plotting phonon dispersion

elchatz at auth.gr elchatz at auth.gr
Mon Feb 19 09:54:27 CET 2018

Hello all,

I am using ph.x to get the phonon frequencies and dynamical matrices  
for an epw.x calculation, however, I would like to plot my phonon  
dispersions from the ph.x calculation for far, as for example is shown  


I am lost as to how I can do that. My ph.x file is as follows,

   prefix   = 'Si',
   epsil    = .false.,
   fildyn   = 'diam.dyn',
   ldisp    = .true.
   fildvscf = 'dvscf'
   tr2_ph   =  1.0d-12,
   recover = .true.

Do I need to use q2r.x and matdyn.x to the files for plotting?

Thank you

Dr. Eleni Chatzikyriakou
Computational Physics lab
Aristotle University of Thessaloniki
elchatz at auth.gr - tel:+30 2310 998109

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