<div dir="ltr">Dear Prof. Dr. Paolo,<div><br></div><div>Thank you for your reply. In fact, I want to conduct some phonon calculations using VCA. In quantum espresso, what is determined by atomic weight? In others words, why the atomic weight can be set freely by users.</div>
<div class="gmail_extra"><br></div><div class="gmail_extra">Thank you.</div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/11/18 Paolo Giannozzi <span dir="ltr"><<a href="mailto:paolo.giannozzi@uniud.it" target="_blank">paolo.giannozzi@uniud.it</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On Mon, 2013-11-18 at 19:03 +0800, Yue-Wen Fang wrote:<br>
<br>
> Additionally, when using mixed PPs generated by virtual.x,<br>
> how to determine the atomic weight?<br>
<br>
</div>atomic weights are used only for molecular dynamics<br>
and phonon calculations. Unless you want to perform<br>
such calculations using VCA (likely not a good idea)<br>
you may choose whatever atomic weight you like<br>
<span class="HOEnZb"><font color="#888888"><br>
P.<br>
--<br>
Paolo Giannozzi, Dept. Chemistry&Physics&Environment,<br>
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>
Phone +39-0432-558216, fax +39-0432-558222<br>
<br>
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</font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">------------------------------------------------------------------------------------------------------------<div>Yue-Wen FANG, PhD candidate<br>
<div><a href="http://clpm.ecnu.edu.cn/" style="font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)" target="_blank">Key Laboratory of Polar Materials and Devices, Ministry of Education</a><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
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