<div dir="ltr">Hi QE community,<div><br></div><div>I am attempting to relax the lattice parameters and internal atomic positions of monolayer MoS2 using a variable cell relaxation. However, although the atom positions will change over the course of the calculation, the lattice parameters do not even though the calculation converges. I have attached my input file here, as well as the atomic positions and lattice parameters output for five steps of the calculation. I am including van der Waals correction, spin-orbit coupling, and using fully relativistic pseudopotentials.</div><div><br></div><div>Could this be because I have started from lattice parameters which are close to the equilibrium values of MoS2? Or do I simply have a tag wrong in the input file?</div><div><br></div><div>Any help would be greatly appreciated.</div><div><br></div><div>Thank you,</div><div>Joshua Young, PhD<div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div>Postdoctoral Research Associate</div><div>Naval Research Laboratory</div><div>Washington, DC</div></div></div></div>
</div></div>