quantum-espresso/test-suite/ph_U_metal_us/Fe.ph.in

phonons of Fe
 &inputph
  prefix = 'iron',
  outdir='./',
  tr2_ph = 1.0d-14,
  fildyn='Fe.dyn',
 /
0.500000000000000   0.000000000000000   0.000000000000000