[Pw_forum] negative charge density!

Stefano de Gironcoli degironc at sissa.it
Fri Jul 15 09:19:03 CEST 2005


Never use Methfessel-Paxton smearing in molecules.
It is not positive definite.
Your smearing width is in my opinion  very small and could be the source 
of the problem
also in the solid Cd case.
Use Marzari-Vanderbilt or even simple gaussian broadening instead


what do you mean by

K_POINTS automatic
 7 7 6 -6 -6 -5 

????????  

check the syntax of automatic grid definition in INPUT_PW !!!

stefano






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