<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none"><!-- p { margin-top: 0px; margin-bottom: 0px; }--></style>
</head>
<body dir="ltr" style="font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
<p>At first sight you struct file seems ok, but this is difficult to help you without more details. For instance: Which functional have you used? Are you keeping the c/a ratio fixed? <span style="font-size: 12pt;">Have you looked into the literature:</span></p>
<p><a href="https://aip.scitation.org/doi/abs/10.1063/1.4948434">https://aip.scitation.org/doi/abs/10.1063/1.4948434</a><br>
</p>
<p><br>
</p>
<div style="color: rgb(33, 33, 33);">
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Wien <wien-bounces@zeus.theochem.tuwien.ac.at> on behalf of shamik chakrabarti <shamik15041981@gmail.com><br>
<b>Sent:</b> Wednesday, June 3, 2020 8:06 PM<br>
<b>To:</b> A Mailing list for WIEN2k users<br>
<b>Subject:</b> [Wien] Structure optimization of Beta -Sn</font>
<div> </div>
</div>
<div>
<div dir="ltr">Dear wien2k users,
<div><br>
</div>
<div> I am trying to optimize the structure of Beta - Sn. However, even after 20% increment of the volume there is no sign of energy minima. I am attaching the struct file herewith this mail for your consideration. </div>
<div><br>
</div>
<div>Looking forward to hearing from you.</div>
<div><br>
</div>
<div>with regards, <br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div style="font-size:small">Dr. Shamik Chakrabarti</div>
<div style="font-size:small">Research Fellow </div>
<div style="font-size:small">Department of Physics</div>
<div style="font-size:small">Indian Institute of Technology Patna</div>
<div style="font-size:small">Bihta-801103</div>
<div style="font-size:small">Patna</div>
<div style="font-size:small">Bihar, India</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>