<div dir="ltr">thanks sir .but today i have tried about my problem and get the result because the atomic positions are so sensitive to the symmetry.....<br></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr">
<span style="color:rgb(136,136,136)">Bhabyadarsan Sahoo (Lipun)</span><div><span style="color:rgb(136,136,136)">Scientific Officer - D ,</span><div style="color:rgb(136,136,136)">Applied Physics Division,</div><div style="color:rgb(136,136,136)">
Bhabha Atomic Research Center,</div><div style="color:rgb(136,136,136)">Mumbai - 400085,</div><div style="color:rgb(136,136,136)">India.</div><div><br></div></div></div></div>
<br><br><div class="gmail_quote">On Tue, Jul 22, 2014 at 1:38 PM, Paolo Giannozzi <span dir="ltr"><<a href="mailto:paolo.giannozzi@uniud.it" target="_blank">paolo.giannozzi@uniud.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="">On Mon, 2014-07-21 at 21:29 +0530, B D SAHOO wrote:<br>
<br>
> why i am not finding the correct mode symmetry of pnma structure of<br>
> Sb2Se3 compound by calculating the phonon at gamma <a href="http://point.as" target="_blank">point.as</a> it is a<br>
> orthorhombic structure so it should show D2h_(mmm) but it is showing<br>
> as C2h(2/m)<br>
<br>
</div>the scf calculation finds 4 symmetries. Is this what you expect?<br>
if not, see here:<br>
<a href="http://www.quantum-espresso.org/wp-content/uploads/Doc/pw_user_guide/node19.html#SECTION000600190000000000000" target="_blank">http://www.quantum-espresso.org/wp-content/uploads/Doc/pw_user_guide/node19.html#SECTION000600190000000000000</a><br>
<span class="HOEnZb"><font color="#888888"><br>
P.<br>
<br>
--<br>
Paolo Giannozzi, Dept. Chemistry&Physics&Environment,<br>
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>
Phone <a href="tel:%2B39-0432-558216" value="+390432558216">+39-0432-558216</a>, fax <a href="tel:%2B39-0432-558222" value="+390432558222">+39-0432-558222</a><br>
<br>
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