Electronic Entropy from OUTCAR

Queries about input and output files, running specific calculations, etc.


Moderators: Global Moderator, Moderator

Locked
Message
Author
rajeshraju
Newbie
Newbie
Posts: 2
Joined: Fri Jan 05, 2018 3:54 pm
License Nr.: 5-1205

Electronic Entropy from OUTCAR

#1 Post by rajeshraju » Tue Jan 09, 2018 1:20 pm

Hi,
I want to calculate the free energy of a metal cluster for that I have computed vibrational frequencies of the system. The contribution of electronic motion to the entropy can be computed as S(e)=Rlnqe where the partition function qe=go, the degenaracy of the electronic energy level which is simply the electron spin multiplicity. This is explained the GAUSSIAN thermochemistry page (http://gaussian.com/thermo/).

My question is the electronic entropy printed in the OUTCAR calculated in the same way?? If so, is it possible to find the multiplicity of the system from this electronic entropy by using the relation to partition function??? If so, don't we have to include the contribution from electronic motion to the electronic energy to obtain the free energy?

Thanks
Rajesh

support_vasp
Global Moderator
Global Moderator
Posts: 1817
Joined: Mon Nov 18, 2019 11:00 am

Re: Electronic Entropy from OUTCAR

#2 Post by support_vasp » Wed Sep 11, 2024 3:46 pm

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


Locked