<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 22, 2015 at 9:13 PM, ashkan shekaari <span dir="ltr"><<a href="mailto:shekaari@gmail.com" target="_blank">shekaari@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">If I import van der Waals correction grimme dftd2 to relaxation of a system, get relaxed position, then run a scf calculation without this correction and then run a phonon calculation, is it a right calculation?<br></p></blockquote><div>no. More exactly: it is a "right" calculation, performed on a structure that is not the equilibrium one, so phonons are not correct<br></div><div> <br></div><div>Paolo<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">
Or I have to consider the correction for all calculations?</p>
<p dir="ltr">Kind regards<span class="HOEnZb"><font color="#888888"><br>
Ashkan Shekaari<br>
Tell: <a href="tel:%2B98%20933%20459%207122" value="+989334597122" target="_blank">+98 933 459 7122</a>; <a href="tel:%2B98%20921%20346%207384" value="+989213467384" target="_blank">+98 921 346 7384</a></font></span></p>
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