<div dir="ltr"><div>Dear user</div><div>I computed Si BS for the structure (scfmbj.struct) attached herewith. When I apply strain (a+a*0.01, b, c-c*0.01) then symmetry changes (space group 1_P1). WIth this group calculations does not run every times QTLB error appears and I have done my best to apply each solution for it.</div><div>Secondly I got structure from wien2k examples. That works fine but when strain is applied then it behaves as a metal. Though this work has been done many times but I can not find my solution. I found VASP study but not wien2k study.</div><div>In VASP POSCAR is </div><div>cubic diamond </div><div> 5.50000000000000 </div><div> 0.0000000000000000 0.4969432792132343 0.4969432792132343</div><div> 0.4969432792132343 0.0000000000000000 0.4969432792132343</div><div> 0.4969432792132343 0.4969432792132343 0.0000000000000000</div><div> Si</div><div> 2</div><div>Direct</div><div> 0.8750000000000000 0.8750000000000000 0.8750000000000000</div> 0.1250000000000000 0.1250000000000000 0.1250000000000000<div><br></div><div>I changed this POSCAR to cif and used for wien2k (structure is attached TEST.struct) , then BS is correct, but after application of strain (1%) again it becomes metal. </div><div>I do not know how to apply strain in POSCAR.</div><div>Could you please guide me?</div><div><br><div class="gmail_signature"><div dir="ltr"><div>Kind Regards</div><div>Muhammad Sajjad </div><div>Post Doctoral Fellow</div><div>KAUST, KSA.</div></div></div>
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