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<div><span></span>Dear QE community,</div><div><br></div><div>My pwscf calculate involves vdW correction item using "<span style="font-family: ''; font-size: 10.5pt; line-height: 1.5; background-color: window;">vdw_corr = 'grimme-d2'</span><span style="font-size: 10.5pt; line-height: 1.5; background-color: window;">". The ph.x cannot implement any calculation where vdW-correction is present. But I need to calculate infrared spectrum of my crystal. </span><span style="font-size: 10.5pt; line-height: 1.5; background-color: window;">Therefore, </span><span style="font-size: 10.5pt; line-height: 1.5; background-color: window;">I am looking for a program to calculate infrared spectra based on berry phase method (as far as I know, it is also called finite displacement method) within Quantum espresso package. Does anybody know about it? </span></div><div><span style="font-size: 10.5pt; line-height: 1.5; background-color: window;"><br></span></div><div><span style="font-size: 10.5pt; line-height: 1.5; background-color: window;">Best Regards,</span></div><div><span style="font-size: 10.5pt; line-height: 1.5; background-color: window;">Yin</span></div><hr style="width: 210px; height: 1px;" color="#b5c4df" size="1" align="left">
<div><span><div style="margin: 10px; font-family: verdana; font-size: 15px;"><span style="color: rgb(0, 0, 0); background-color: rgba(0, 0, 0, 0);">Dr. Yin Li <br>Department of Biophysics,Medical School, University of Pecs,<br>No.12 Szigeti Street, Pecs, H-7624, HUNGARY<br>Phone: +36-72-535271/36271</span></div></span></div>
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