No convergence for dipole-corrected structural relaxation
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- Lian
- Newbie
- Posts: 12
- Joined: Thu Apr 25, 2013 3:04 pm
- Location: Mons, Belgium
No convergence for dipole-corrected structural relaxation
Dear VASPers,
I am working on graphene (84 C atoms) with 6 H atoms adsorbed on the surface. I performed a structural relaxation (IBRION=2, ISIF=0) without dipole correction. By using ALGO=Fast and real space projection (LREAL = Auto), the system converged rapidly, as I expected.
Now, I would like to optimize the new geometry (restart from CONTCAR) by switching on the dipole correction (LDIPOL=TRUE). However, when I use IALGO=38 and LREAL=FALSE (for very accurate calculation), the electronic minimization never converges.
My question is: Why it is so? Is it due to the change of electronic minimization algorithm or the real space projection?
Thanks for your help.
L.
I am working on graphene (84 C atoms) with 6 H atoms adsorbed on the surface. I performed a structural relaxation (IBRION=2, ISIF=0) without dipole correction. By using ALGO=Fast and real space projection (LREAL = Auto), the system converged rapidly, as I expected.
Now, I would like to optimize the new geometry (restart from CONTCAR) by switching on the dipole correction (LDIPOL=TRUE). However, when I use IALGO=38 and LREAL=FALSE (for very accurate calculation), the electronic minimization never converges.
My question is: Why it is so? Is it due to the change of electronic minimization algorithm or the real space projection?
Thanks for your help.
L.
Last edited by Lian on Wed May 15, 2013 1:28 pm, edited 1 time in total.
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- Global Moderator
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- Joined: Mon Nov 18, 2019 11:00 am
Re: No convergence for dipole-corrected structural relaxation
Hi,
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