[Pw_forum] Mg pseudopotential

[Aritz Leonardo]

Hi,

I am trying to calculate surface phonons of Mg using "bhs" 
pseudopotential provided in the pwscf web. The phonon frequencies 
resulting from the calculations are too high. To improve this  I think 
that it is necessary to use a PP with nonlinear correction, this way the 
equilibrium lattice constant is bigger and frequencies low down a bit.

Does anybody know how to obtain a norm conserving pseudo with linear 
correction which is NOT ULTRASOFT?

thanks