<div dir="ltr">Dear Raj Kamal,<div><br></div><div>The answer is 'it depends'. Any code based on pseudopotentials or PAW data sets will start giving wrong results and/or failing in the limit of high pressure. The reason being that the frozen core approximation becomes invalid due to the cores coming too close toguether or overlaping with each other (you may get away by using smaller cores), which btw should be preceeded by a break down of the two-center approximation used with PAW data sets. So, if the range of pressure of interest does not cause the atoms to get too close then everything should be fine.</div><div><br></div><div>Best,</div><div>Lazaro Calderin</div><div>====================</div><div>Quantum Theory Project<br>Deparment of Physics<br>University of Florida</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Mar 5, 2016 at 4:21 AM, Raj kamal <span dir="ltr"><<a href="mailto:rajkamalloyola@gmail.com" target="_blank">rajkamalloyola@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br clear="all"><div>Dear QE experts,</div><div>how QE is good for high pressure work and have anyone done this High pressure work using Quantum espresso.</div><span class="HOEnZb"><font color="#888888">-- <br><div><div dir="ltr"><div><div dir="ltr"><div style="text-align:left"><em><font color="#999999" style="background-color:rgb(243,243,243)">Best regards,</font></em></div><div style="text-align:left"><em><font color="#999999" style="background-color:rgb(243,243,243)">Rajkamal.A.</font></em></div><div style="text-align:left"><em><font color="#999999" style="background-color:rgb(243,243,243)">Research Scholar,(SRM UNIV).</font></em></div></div></div></div></div>
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