Dear all,<br><br>I have a quick question about utilization of pseudopentials.<br><br>Is it possible to use Vanderbilt ultrasoft PPs with  <span style="font-family: monospace;"></span>Martins-Troullier PPs in an electronic structure calculation?<br>For example: <span class="grigio"></span><a href="http://www.quantum-espresso.org/pseudo/1.3/UPF/I.pbe-mt_bw.UPF" class="aranciolink">I.pbe-mt_bw.UPF</a> and <span class="grigio"></span><a href="http://www.quantum-espresso.org/pseudo/1.3/UPF/O.pbe-van_bm.UPF" class="aranciolink">O.pbe-van_bm.UPF</a><br><br>Best Wishes,<br>Sang-Hwan<br><BR><BR>Department of Chemistry<br>University of Houston<br>136 Fleming Building<br>Houston, TX 77204-5003</BR></BR>