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<p dir="ltr">Dear Quantum ESPRESSO Community,</p>
<p dir="ltr">I am trying to model the Ba₂ZrS₄ compound with a
body-centered tetragonal (bct) structure using Quantum ESPRESSO.
However, when I visualize the structure using XCrySDen from my SCF input
file (<a href="http://ba2zrs4.scf.in">ba2zrs4.scf.in</a>),
the crystal does not appear as expected. The atomic positions and
symmetry seem incorrect even before running any calculation.<br>
To help identify the issue, I have attached:</p>
<p dir="ltr">a) <a href="http://ba2zrs4.scf.in">ba2zrs4.scf.in</a>: My input file used for visualization.</p>
<p dir="ltr">b) unitcell.png: The structure as visualized in XCrySDen.</p>
<p dir="ltr">Could anyone kindly review my input file and advise if
there is any mistake in the lattice vectors, atomic positions, or
crystal symmetry definition? Any help would be sincerely appreciated.</p>
<p dir="ltr">Thank you very much for your time and support.</p>
<p dir="ltr">Best regards,<br>
Mst. Asma Khatun<br>
PhD Fellow, Department of Physics<br>
University of Rajshahi, Bangladesh</p><p>whatsapp: +8801723674001</p><p dir="ltr">e-mail: <a href="mailto:asma@tch.hstu.ac.bd" target="_blank">asma@tch.hstu.ac.bd</a></p></div></div>