<p>Hello everyone,</p>
<p> I am trying to do vibrational analysis for gas phase system. I am
following the tutorial "Calculating Vibrational Spectra from Molecular
Dynamics". Initially i have done massive equilibration of a single methanol
system for 6000 steps. After that i use the following example CP2k input file
to simulating a trajectory with wannier centers for 60000 steps. Then, I calculated
the IR spectra with methanol_wannier.xyz file using Travis software.
Unfortunately, I don’t get a good IR spectrum because of it doesn’t show peaks
at 200, 1000, 1500 and 3700 cm-1 and it has very noise. Would you please guide me why I don’t get
a good IR spectrum?</p>
<p><br></p><p>Here i am
attaching my IR spectrum and
the input files of massive equilibration and the wannier center for a single methanol.</p>
<p>Please help me
on this.</p><p>Thanks.</p><p><img alt="IR.png" data-iml="217856.70000000298" width="534px" height="322px" src="cid:14c0cf0a-eb1b-43a0-8d4b-8b81fbb4ee83"><br></p>