<div><div>Dear QE community,</div><div><br></div><div>I am new to phonon calculations, and trying to calculate phonons at gamma point for CO adsorbed on Fe(100), but the run stopped with the error below. Could you please help me remove the error?</div><div><br></div><div><div><br></div><div> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div>     Error in routine phq_readin (1):</div><div>     no elec. field with metals</div><div> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div><br></div><div>     stopping ...</div><div><br></div></div><div>Jibiao Li</div><div><br></div><div>Yangtze Normal University, China</div><div><br></div><div>phonons at Gamma</div><div> &inputph</div><div>  tr2_ph=1.0d-14,</div><div>  prefix='HbB.1ml',</div><div>  epsil=.true.,</div><div>  amass(1)=15.999,</div><div>  amass(2)=12.001,</div><div>  amass(3)=55.850,</div><div>  outdir='/home/bmllzr/calc/CO_Fe100/HbBs.1ml.3b3.QE/',</div><div>  fildyn='HbB.dynG',</div><div> /</div><div>0.0 0.0 0.0</div></div><div><br></div>