Thank you Prof. <em style="font-weight:bold;font-style:normal;font-family:arial,sans-serif;line-height:11px;background-color:rgb(255,255,255)">Paolo Giannozzi</em><span style="color:rgb(34,34,34);font-family:arial,sans-serif;line-height:11px;background-color:rgb(255,255,255)"> for the reply.   So is it ok to use the Z+1 approximation rather than using core excited pseudo potential ? </span><div>

<span style="color:rgb(34,34,34);font-family:arial,sans-serif;line-height:11px;background-color:rgb(255,255,255)"><br></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;line-height:11px;background-color:rgb(255,255,255)"><br>

</span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;line-height:11px;background-color:rgb(255,255,255)">Regards</span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;line-height:11px;background-color:rgb(255,255,255)"><br>

</span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;line-height:11px;background-color:rgb(255,255,255)">Manoj</span></div>