<div><div>Dear all,</div><div> I want to do phonon calculation on an adsorption system with symmetry. So Idid some test calculations.</div><div>I did a test calculation on a system, say an molecule is adsorbed on a surface. I just want to calculate the vibrational frequencies of the molecule. I set "nat_todo" in the input file of ph.x, and set the list of indices of atoms of the molecule. But in the result file there is not phonons. I don't know what's wrong with it, and how to set parameter in the input file of ph.x. Could anyone help me? Thank you!</div><div><br></div><div>Regards</div><div>Huazhong</div></div><br><br><span title="neteasefooter"/><hr/>
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