[Pw_forum] GGA potentials

[titas at students.mrc.iisc.ernet.in]

Hi,
 I am using pwscf code with GGA potentials. I am basically trying to look 
at the charge density contours of different metals. I find a difference in 
the contours with change in the ecut and ecutrho values (minute details in 
charge density get changed). Is there any optimum ecut and ecutrho value 
for metals ( W, Cr Mo etc) ? And what are the other important parameters 
when working with metallic systems.

thanks,
with regards,
Titas.