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during Barry's calculation WARNING: larger than pi/2, not well clustered.

Posted: Wed Oct 17, 2012 3:23 pm
by alistar
Hi,

during the calculation of a Barry's phase with IGPAR=3 received a couple of time the following WARNING:
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Im ln[Det|M_k|/<Det|M_k|>_av]= 2.52818 <= WARNING: larger than pi/2, not well clustered.
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I'm doing this on a slab with a polarization along [001] and the usual dipole correction.

The same calculation with IGPAR=1 gives another error:
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Error in subroutine BERRY: did not find all determinants

Matrix CMK is not an nxn matrix for
ISTR = 1 j = 0
--------------------------------------------------------

how can solve it?
thanks
alistar

Re: during Barry's calculation WARNING: larger than pi/2, not well clustered.

Posted: Tue Sep 10, 2024 2:22 pm
by support_vasp

Hi,

We're sorry that we didn’t answer your question. This does not live up to the quality of support that we aim to provide. The team has since expanded. If we can still help with your problem, please ask again in a new post, linking to this one, and we will answer as quickly as possible.

Best wishes,

VASP