!Input file for the ifc code. Analysis of the AlAs DDB                       

!Flags
 ifcflag   1     ! Interatomic force constant flag

!Wavevector grid number 1 (coarse grid, from DDB)
  brav    1      ! Bravais Lattice : 1-S.C., 2-F.C., 3-B.C., 4-Hex.)
  ngqpt   12  12  4   ! Monkhorst-Pack indices
  
  nqshft  1         ! number of q-points in repeated basic q-cell
   q1shft  3*0.0
#  q1shft 0.0 0.0 0.5

!Effective charges
     asr   1     ! Acoustic Sum Rule. 1 => imposed asymetrically
  chneut   1     ! Charge neutrality requirement for effective charges.

!Interatomic force constant info
  dipdip  1      ! Dipole-dipole interaction treatment
  ifcana  1      ! Analysis of the IFCs
  ifcout 20      ! Number of IFC's written in the output, per atom
  natifc  1      ! Number of atoms in the cell for which ifc's are analysed
   atifc  1      ! List of atoms