Search found 2306 matches

by graeme
Fri Mar 21, 2025 3:09 am
Forum: VTSTTools
Topic: Inquiry Regarding High Energy Barrier in CI-NEB Calculation
Replies: 9
Views: 34958

Re: Inquiry Regarding High Energy Barrier in CI-NEB Calculation

Sounds great; let's discuss by email.
by graeme
Wed Mar 19, 2025 4:54 pm
Forum: VTSTTools
Topic: Inquiry Regarding High Energy Barrier in CI-NEB Calculation
Replies: 9
Views: 34958

Re: Inquiry Regarding High Energy Barrier in CI-NEB Calculation

These looks much better and physically reasonable.

You have, however, identified an important challenge. This is a disordered material and so it will take more than a single barrier to quantify diffusion in the material.

For that, one simple (but risky) approach is to run MD at high temperature in ...
by graeme
Tue Mar 11, 2025 3:26 am
Forum: VTSTTools
Topic: Inquiry Regarding High Energy Barrier in CI-NEB Calculation
Replies: 9
Views: 34958

Re: Inquiry Regarding High Energy Barrier in CI-NEB Calculation

yes, that's right. The parameters related to the electronic structure need to be the same.
by graeme
Mon Mar 10, 2025 6:30 pm
Forum: VTSTTools
Topic: Inquiry Regarding High Energy Barrier in CI-NEB Calculation
Replies: 9
Views: 34958

Re: Inquiry Regarding High Energy Barrier in CI-NEB Calculation

You need to have the same settings for your endpoints and your band. I see several differences including the precision, lmixmax, VOSKOWN, ISPIN, NBANDS, ... - I mean it's a little crazy in that it seems like the band parameters are completely different from the endpoints.
by graeme
Thu Feb 13, 2025 3:54 pm
Forum: VTSTTools
Topic: Help with NEB Movie Generation Using nebmovie.pl
Replies: 4
Views: 167364

Re: Help with NEB Movie Generation Using nebmovie.pl

Ah, what I mean is just download all the scripts. They will be in a directory. Then, if you add that directory to your path, they will just work no matter where you are using them.
by graeme
Wed Feb 12, 2025 12:16 am
Forum: VTSTTools
Topic: Help with NEB Movie Generation Using nebmovie.pl
Replies: 4
Views: 167364

Re: Help with NEB Movie Generation Using nebmovie.pl

First, it's best just to download all of the vtstscripts and run them from a single directory - that why they can call each other.

For nebmovie.pl, you can add the argument 0 to make a movie of the poscar files or a 1 to make a movie of the contcar files.

The ase-gui program can load these movies ...
by graeme
Sun Jan 19, 2025 11:18 pm
Forum: VTSTTools
Topic: Effect of Electric field on NEB
Replies: 2
Views: 83478

Re: Effect of Electric field on NEB

I think this is a question for Zhiyao Duan: zhiyao.duan@nwpu.edu.cn
by graeme
Sat Jan 18, 2025 3:36 am
Forum: VTSTTools
Topic: CI-NEB convergence issue
Replies: 12
Views: 295967

Re: CI-NEB convergence issue

and yes, with pbc, there is no difference where you make a vacancy
by graeme
Sat Jan 18, 2025 3:36 am
Forum: VTSTTools
Topic: CI-NEB convergence issue
Replies: 12
Views: 295967

Re: CI-NEB convergence issue

you just don't have the atoms aligned properly in terms of their ordering in the initial vs final configuration:

initial

...
7.0216564942662583 7.0216564942662583 7.0216564942662583
5.7854011707769049 8.5924886671983032 8.5924886671983032
7.2130445044587432 10.0724440734540899 10 ...
by graeme
Fri Jan 17, 2025 2:23 am
Forum: VTSTTools
Topic: CI-NEB convergence issue
Replies: 12
Views: 295967

Re: CI-NEB convergence issue

If you post the second path where the IDPP does not give you a sensible initial path, I can take a look at it.
by graeme
Mon Dec 30, 2024 3:37 pm
Forum: VTSTTools
Topic: CI-NEB convergence issue
Replies: 12
Views: 295967

Re: CI-NEB convergence issue

your vasp binary does not have our vtstcode linked in.
To check, you can grep for VTST in the OUTCAR file.

Instructions for compiling vasp with the vtstcode are here:
https://theory.cm.utexas.edu/vtsttools/ ... ation.html
by graeme
Mon Dec 30, 2024 3:08 pm
Forum: VTSTTools
Topic: CI-NEB convergence issue
Replies: 12
Views: 295967

Re: CI-NEB convergence issue

I don't see a problem with this calculation. You do not have our code linked in so you can't use the climbing image, but otherwise it seems ok.
by graeme
Mon Dec 30, 2024 3:30 am
Forum: VTSTTools
Topic: CI-NEB convergence issue
Replies: 12
Views: 295967

Re: CI-NEB convergence issue

I'll need a .tar.gz of the calculation to see what is going on. I can't figure out anything from 5 poscar files.
by graeme
Mon Dec 09, 2024 9:41 am
Forum: VTSTTools
Topic: Regarding installation of VTST tools (6.x) version with VASP 6.4.3
Replies: 10
Views: 325528

Re: Regarding installation of VTST tools (6.x) version with VASP 6.4.3

it works? Hopefully, yes, and fantastic!