<div dir="ltr">Dear Pwscf users,<div>I want to study the Si 001 surface reconstruction. I am sending the input of 2x1 Si (001) surface. I used 16 Ang Vaccuum between the slabs along z-direction. I am using calculation = 'relax'. In the literature i find that 2x1 reconstruction for Si (001) surface is there. But with the supplied input after running the calculation, I am not getting the dimers which is expected to form in 2x1 reconstruction.</div><div><br></div><div>I do use calculation=vc-relax, but the calculation is not converging after 100 iterations and get killed.</div><div>So what changes I have to made in the input so that i can get the 2x1 dimer formation in the reconstructed surface.</div><div><br></div><div>kindly help me in this regard.</div><div><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div>Dr. Bipul Rakshit<br>Research Associate,<br>Institute of Physics (IOP),<br>Bhubaneswar- <span>751 005</span></div><div>Orissa <br></div><div>India</div></div></div>
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