Dear Nicola Marzari<font class="Apple-style-span" color="#5B1094" face="arial, sans-serif"><span class="Apple-style-span" style="border-collapse: collapse; white-space: nowrap; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px;"><b>:</b></span></font><div>
<font class="Apple-style-span" color="#5B1094" face="arial, sans-serif"><span class="Apple-style-span" style="border-collapse: collapse; white-space: nowrap; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px;"><b><br>
<font class="Apple-style-span" color="#000000" face="arial"><span class="Apple-style-span" style="border-collapse: separate; font-weight: normal; white-space: normal; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px;"><br>
</span></font></b></span></font><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">2) contrary to what is said below, you CAN mix ultrasoft and norm-conserving<br>
pseudos.<br></blockquote><div> </div><div>Can you tell me why it is allowable to mix US and NC pp? I never know it before.</div><div>Sorry for troubling you.</div><div>Thanks in advance:)</div><div><br></div><div>____________________________________</div>
</div>Hui Wang<br>School of physics, Nankai University, Tianjin, China<br>
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