Search found 3 matches

by alexander
Thu Jul 23, 2015 12:08 pm
Forum: VTSTTools
Topic: Divergence using VTS
Replies: 5
Views: 12939

Re: Divergence using VTS

Thank you, I ultimately had good results using: IOPT = 7 MAXMOVE = 0.200000 TIMESTEP = 0.100000 FALPHA = 0.800000 FTIMEDEC = 0.500000 FTIMEINC = 1.100000 For whom it may be useful, here is a python script to make a movie of neb-images as they converge using the XDATCAR (v5) files. The combined XDATC...
by alexander
Tue Jun 23, 2015 12:04 pm
Forum: VTSTTools
Topic: Divergence using VTS
Replies: 5
Views: 12939

Re: Divergence using VTS

Thank you very much for your quick reply, this was indeed the problem. May I further ask about some advice to improve convergence? In my tests in found quick-min to be the only reliable optimizer, however it takes about 70 steps to get to forces below 0.05 eV/Ang. The graph shows an optimization usi...
by alexander
Wed Jun 10, 2015 12:57 pm
Forum: VTSTTools
Topic: Divergence using VTS
Replies: 5
Views: 12939

Divergence using VTS

Thank you for putting so much work on effort into VTS. I'm testing VTS for diffusion of hydrogen into an oxygen vacancy. In my tests I got convergence using VASP's ibrion=1 without the VTS patch. However using a VTS patched version results in a 'outwards' movement of the hydrogen in image 01 and 04 ...