Problem with optimization

Total energy, geometry optimization, DFT+U, spin....

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alexmoratalla
Posts: 2
Joined: Wed Mar 02, 2011 12:42 pm

Problem with optimization

Post by alexmoratalla » Mon Jul 25, 2011 3:55 pm

Hi everybody.

I am trying a while (more than a while, in fact) to optimize the lattice parameters of my unit cell. If I set optcell = 1, the output acell does not differ from the input, even I set far from the expected value. Moreover, if I set optcell = 6 or 9, it seems to work fine. Someone has ever had this problem?
The flags for this optimization are the standard.

Regards,

Alejandro.
Alejandro Molina-Sánchez
University of Luxembourg

blackburn
Posts: 42
Joined: Fri Aug 14, 2009 8:03 pm

Re: Problem with optimization

Post by blackburn » Mon Jul 25, 2011 6:33 pm

Have you checked rprim? It's possible that acell is fixed but rprim changes.

Can you send your log so we can have a better idea what the problem is?

Simon

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