Dear Prof. Marzari, Nice to hear from you again! The reason why I am thinking on the use of finite displacement is that I want to employ the van der waals correction into my phonon calculation. Currently, this function is still not available for DFPT in ph.x. Is there any other option to do that?
Best Regards, Yin ------------------------------ Dr. Yin Li Department of Biophysics,Medical School, University of Pecs, No.12 Szigeti Street, Pecs, H-7624, HUNGARY Phone: +36-72-535271/36271
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