[Pw_forum] hi

[Dr. B.R.Sahu]

Dear PWSCF users

        In the present version 1.2, variable cell
Parrinello-Rahman(vc-md-pr) and variable cell-relaxation(vc-relax) is
implemented for ion dynamics. 

If one is interested only in the optimization of volume, b/a,c/a and
internal degrees of freedom simultaneously probably using internal stress
on the crystalline unit cell as a guide(say in the orthorhombic
crystalline system with internal degrees of freedom) then vc-relax option
can be used-If I understand it correctly.

Is there any article which describes the vc-relax method?

best regards
sahu