SOrry, <br>now the input file is attached<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Bipul Rakshit</b> <span dir="ltr"><<a href="mailto:bipulrr@gmail.com">bipulrr@gmail.com</a>></span><br>
Date: Thu, Aug 6, 2009 at 2:53 PM<br>Subject: relaxation of perovskite structure<br>To: PWSCF Forum <<a href="mailto:pw_forum@pwscf.org">pw_forum@pwscf.org</a>><br><br><br>Dear PWSCF users,<br>I want to do structural relaxation calculation on LaMnO3 (insulating antiferromagnet). And I am having few question for doing relaxation of a=b#c type of compounds.<br>
<br>1. Do I have to simply run the vc-relax calculation and the results at the end gives relaxed structure?<br>
2. Do after relaxation the final Pressure P= , I got very low? <br>3. I have run the vc-relax calculation (still running). During calculation I find that although pressure reaches comparitively lower value ~ -2.01 kbar, but the (3x3) stress tensor matrix, the off diagonal although zero, but the on-diagonal elements do show 11.52 Kbar pressure also............<br>
So my question is, why I am not getting total pressure P and all the on-diagonal element appreciable of some very low value? <br>What more option I have to use in input file for my point 3?<br><br>Kindly guide me for the same.<br>
regards<br clear="all"><font color="#888888"><br>-- <br>Dr. Bipul Rakshit<br>Research Associate,<br>S N Bose Centre for Basic Sciences,<br>Salt Lake,<br>Kolkata 700 098<br>India<br>
</font></div><br><br clear="all"><br>-- <br>Dr. Bipul Rakshit<br>Research Associate,<br>S N Bose Centre for Basic Sciences,<br>Salt Lake,<br>Kolkata 700 098<br>India<br>