<div dir="ltr">HiĀ <span style="font-size:12.8px">Sayan Chaudhuri,</span><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">Since the band gap should be so small, and you have Sn where the SOC should be important in your system. I think you should try to consider SOC for this system.For this,you will have to use the ONCV_PBE version that is designed with full relativity.</span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">Tan</span></div><div><span style="font-size:12.8px">THU</span></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Sep 6, 2017 at 2:43 PM, sayan chaudhuri <span dir="ltr"><<a href="mailto:csayan895@gmail.com" target="_blank">csayan895@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div><div>Dear QE experts,<br><br></div>I am trying
to calculate band structure for Full Heusler Fe2TiSn system. But instead
of getting the usual band gap(0.06eV), in my case the conduction and
valence band overlaps except otherwise the band structure is almost
same.<br><br></div>I have tried to do the same calculation using Pbesol pseudopotential and ONCV_PBE pseudopotential, but got the same result. <br><br></div>I
am atttaching my input files and output band structure. Can somebody tell me what is the mistake I am
doing?<br><br></div>Thanking you in advance,<br><br></div>Sayan Chaudhuri</div><div>Research Scholar<br></div>IIT Indore</div>
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Department of physics, THU.
Beijing 100084, China
Office: B403,New Science Building
E-mail:<a href="mailto:E-mail%3Athx13@mails.tsinghua.edu.cn" target="_blank">t</a><a href="mailto:anhx90@gmail.com" target="_blank">anhx90@gmail.com</a></pre></div></div></div></div></div></div></div></div>
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