<div dir="ltr">Dear QEers£Ĵ<div><br></div><div>I took many efforts to generate pseudo potentials(PPs) using ld1.x and mix the PPs with virtual.x. However, I am still uncertain that whether VCA(virtual crystal approximation) in Quantum Espresso can give us reliable results. I hope experienced experts can tell me the reliability of it.<div>
<br></div><div>Additionally, when using mixed PPs generated by virtual.x, how to determine the atomic weight? For example, if I mix N.pbe.UPF and O.pbe.UPF (ratio is 1:9) and then get a mixed PPs named NO.pbe.UPF, how to set the ATOMIC_SPECIES in the input file? Is the atomic weight 15.9994 or <span style="font-family:arial,sans-serif;font-size:12.727272033691406px;line-height:14.545454025268555px">14.0067 or (</span><span style="font-family:arial,sans-serif;font-size:12.727272033691406px;line-height:14.545454025268555px">14.0067*0.9+</span>15.9994*0.1)?<br>
<div><br></div><div>Any suggestion is appreciated. Thank you!</div><div><br></div><div><br></div><div><br></div><div><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)">
<div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)"><a href="http://english.ecnu.edu.cn/" target="_blank">East China Normal University </a></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
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