<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><br>Dear all<br><br>I calculated Dispersion curve of TiO2 with ultrasoft pseudopotential. But the experimental data for checking gamma point is not enough . I want to know, How much my data will change, if I use Norm - Conserving pseudopotential?<br><br>Thanks in advance<br><br>Meghdad saeedian <br>M.Sc student , University of tehran <br></td></tr></table><br>