[QE-users] Essential of doing vc-relax - regarding

2021-04-16 Thread singaravelan T R
Dear all, I like to know the difference between vc-relax (*optimize lattice constant and atomic positions) *and relax(*optimize the atomic positions alone*). other than the bold words, i like to know further.? and also When to perform vc-relax? Is vc-relax superior over relax part. ? I have two v

Re: [QE-users] Essential of doing vc-relax - regarding

2021-04-16 Thread SAURAV LAHIRI
Hi singaravelan, relax calculation is done mostly in 2d systems where we need to find the optimized atomic coordinates. In your case vc-relax is the best. But there is nothing like which is superior. It depends on your system. Thank you. *SAURAV LAHIRI* *Junior Research Fellow (JRF)* *Condense