<div dir="ltr"><b>Question</b>: When using <b>ld1.x </b>to generate pseudopotential(PP) in QE, I cannot understand the <b>exact differences</b> between single-projector & multiple-projector. What's the physical content of single & multiple projector?<div>
<br></div><div><b>The details i have known are listed below.</b></div><div><font face="times new roman, serif">1. If i stick to single-projector PP's, then one potential per angular momentum l.</font></div><div><font face="times new roman, serif">2. Multiple-projector PP's is correct for UltroSoft pseudization while sigle-projector PP's is used for Norm-Conserving pseudization</font></div>
<div><font face="times new roman, serif"><br></font></div><div><font face="times new roman, serif">Best Regards!</font></div><div><font face="times new roman, serif"><br clear="all"></font><div><br></div>-- <br>
------------------------------------------------------------------------------------------------------------<div>Yue-Wen FANG, PhD candidate<br><div><a href="http://clpm.ecnu.edu.cn/" style="font-size:14px;font-family:arial,sans-serif" target="_blank">Key Laboratory of Polar Materials and Devices, Ministry of Education</a><br style="color:rgb(34,34,34);font-size:14px;font-family:arial,sans-serif">
<div style="color:rgb(34,34,34);font-size:14px;font-family:arial,sans-serif"><a href="http://www.ecnu.edu.cn/english/" target="_blank">East China Normal University</a> </div><div style="color:rgb(34,34,34);font-size:14px;font-family:arial,sans-serif">
Phone: +86-18321726131</div><div style="color:rgb(34,34,34);font-size:14px;font-family:arial,sans-serif">I will persist until I succeed!</div></div><div><br></div><div><br></div></div>
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