Thanks for reply sir<br><br>anther problem is when u keep on decring the value of rlderiv then theses divergences comes in energy range of {0 -2}, and two curves ( all electron ld , pseudo ld ) do not overlap. then is this potential correct.<br>
<br>thanks <br><br> <br><br clear="all">Karandeep<br>Research Scholar<br>Physics Department,<br>IIT, Delhi<br>