Search found 3 matches

by naman_katyal
Thu Aug 31, 2023 6:50 pm
Forum: VTSTTools
Topic: NEB calculations with spin
Replies: 2
Views: 16083

Re: NEB calculations with spin

Can you post your NEB directory as a zip file with all the files for us to have a look, Otherwise we don't know if its an optimizer problem or an NEB problem, some tags are missing. Add the OUTCARS of the initial and final images to their NEB directories as well.
by naman_katyal
Thu Aug 31, 2023 6:48 pm
Forum: VTSTTools
Topic: NEB CONVERGENCE Not achieved (NSW=1000) and Internal Error with VASP 6.4
Replies: 1
Views: 10509

Re: NEB CONVERGENCE Not achieved (NSW=1000) and Internal Error with VASP 6.4

Hi I looked at your calculation, and it's optimizing perfectly, though slowly, but that's the choice of the optimizer in your INCAR. If you look at the forces in each directory, they are all close to convergence. Usually, when I run NEB, I recommend optimizing the band without a CLIMBING IMAGE tag b...
by naman_katyal
Mon Sep 02, 2019 3:41 am
Forum: VTSTTools
Topic: Can the VTST toolkit generate the Raman spectrum of a system?
Replies: 1
Views: 12188

Re: Can the VTST toolkit generate the Raman spectrum of a system?

Hi To calculate the Raman response you need the derivative of polarizability with respect to the normal mode for all the normal modes for a given system. For this you first need to find the normal modes which can be done using VTST and generate these two files : freq,dat and modes_sqrt_amu.dat. (you...