Correction test for charged molecule and its adsorption model

To share experience including discussions about scientific questions.


Moderators: Global Moderator, Moderator

Post Reply
Message
Author
xinru_peng
Newbie
Newbie
Posts: 5
Joined: Wed Sep 03, 2025 7:42 pm

Correction test for charged molecule and its adsorption model

#1 Post by xinru_peng » Wed Dec 24, 2025 4:33 pm

Dear developers and users,

I am computing adsorption energy for a charged model (1 ion with -1 charge and a neutral 3D material (not cubic cell)). I tested several keywords for electrostatic correction of charged system. I noticed that the "LMONO" and "IDIPOL+DIPOL" shouldn't be used at the same time. If used, the result will be only from LMONO. In this situation, how can I understand this and which one should I choose for ion and 3D+ion?

I notice VASP wiki provide a table for instruction (https://www.vasp.at/wiki/Category:Electrostatics). My situation is charge=yes and dipole moment=yes. For ion(0D), only LMONO is recommended; for 3D+ion (3D), only IDIPOL+DIPOL are recommended. However, if I use like these, the adsorption energy will be very positive.

Thank you for your time and looking forward to your reply!

Best Regards,
Xinru

my test results: attached test.png (all in eV)

test.png
instruction.png
You do not have the required permissions to view the files attached to this post.

ferenc_karsai
Global Moderator
Global Moderator
Posts: 581
Joined: Mon Nov 04, 2019 12:44 pm

Re: Correction test for charged molecule and its adsorption model

#2 Post by ferenc_karsai » Thu Dec 25, 2025 9:15 am

I moved this post to "from users to users".


Post Reply