<div dir="ltr">Dear Experts,<br> I did scf and other calculation by using USPP, but in epsilon
calculation (optical properties) I have no option but have to use only norm conserving PP, Is
this correct? Will it make any difference? Shall I compare the calculated properties and parameters by using these different pseudopotentials? For example, If I have calculated electronic properties by USPP and optical properties by norm conserving PP, can I do interpretation of these properties for the same compound?<br><br><span><span><span class="gmail-m_-9219851748252903000gmail-Linkify">With warm regards<br>Sudha Priyanka G<br>Assistant Professor,<br>Lady Doak College,<br>Madurai, Tamilnadu, India.</span></span></span></div>