[Pw_forum] Ph.x code help

[Samin, Adib J.]

Dear Quantum Espresso users,


I am trying to run the ph.x executable using a simple silicon example which I found online. I first perform the scf calculation and save the results and then use the same outdirectory and prefix when running the ph.x code. However, I keep getting the same error which says:

'Error in routine image_q_irr (1):

  some images have no rapp'

I have attached the ph input file.

I would really appreciate it if someone can help explain to me why this is happening.


Phonons of Si at Gamma
 &inputph
  tr2_ph=1.0d-14,
  amass(1)=28.0855,
  prefix='SIPH',
  outdir='/nfs/11/osu7834/'
  fildyn='si.dynG',
 /
 0.0 0.0 0.0



Thanks,

Adib Samin




Adib Samin

Postdoc

The Department of Aerospace and Mechanical Engineering

The Ohio State University
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