[Pw_forum] equilibrium lattice parameters

[Jess Kondor]

Hello,
 I have a tetragonal unit cell with experimental lattice parameters
(a=b=/c). In order to find their theoretical values, I performed variable
cell relaxation (vc-relax). But I want to be sure that I performed these
calculations correctly. I know it is possible to perform several static
calculations for different lattice parameters (or volume) and then fit the
data by EOS. But I only see (for example, ev.f90 from espresso
distribution), that it is possible only for cubic and hexagonal unit cell.
Could anyone tell me can I use such kind of technique in case of tetragonal
unit cell?


cheers,
   Jess
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