[CP2K-user] Change arrangement of electrons in POTENTIALS file
Daniele Ongari
daniel... at gmail.com
Mon Jan 4 10:36:19 UTC 2021
Dear all,
for some high-throughput calculation on Metal Organic Frameworks I need to
specify the MAGNETIZATION in order to impose the highest ferromagnetic
state at a given oxidation state. It is an assumption to treat all the
metals in a coherent way.
The problem I'm facing is that, when the electrons of the potential are
arranges such as:
- all the orbitals are filled
or
- more than one orbital is partially filled
CP2K fails with the error
*******************************************************************************
* ___
*
* / \
*
* [ABORT]
*
* \___/ Magnetization value cannot be imposed for this atom type
*
* |
*
* O/|
*
* /| |
*
* / \
qs_kind_types.F:2790 *
*******************************************************************************
because, I think, MAGNETIZATION can not decide which electrons to unpair.
I could use the section &BS but it gets too complicate, so the question is:
am I allowed to change the original ordering in the POTENTIAL file?
To explain better, let's take the elements of the 10th column that lead to
failure, Pt and Pd:
(row 3) Ni is arranged "4 6 8", and it is fine as magnetization will unpair
electrons form the partially occupied d orbitals
(row 4) Pd is arranged as "3 6 9" and fails because both s and d orbitals
are partially occupied. Am I allowed to modify it as "4 6 8"?
(row 5) Pt is arranged as "2 6 10" and fails because all orbitals are fully
occupied. Am I allowed to modify it as "4 6 8"?
Technically this trick works and the CP2K calculation starts an even
converges, but do you see any theoretical problem in doing this?
Thanks for your attention.
Daniele
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