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Displacement 
Section  Linear Response::Vibrational Modes  
Type  float 
Default  0.01 a.u. 
 
When calculating phonon properties by finite differences (CalculationMode = vib_modes,
ResponseMethod = finite_differences ),
Displacement  controls how much the atoms are to be moved in order to calculate the
dynamical matrix.
 
    
         
        
        
        
        Source information
        
         
    
    
main/phonons_fd.F90  : 127
 call  parse_variable ( sys % namespace ,  'Displacement' ,  CNST ( 0.01 ),  vib % disp ,  units_inp % length )