Hi
HTH
M.
--
You received this message because you are subscribed to the Google Groups "cp2k" group.
To unsubscribe from this group and stop receiving emails from it, send an email to
cp2k+uns...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/cp2k/061d18c5-ce60-480d-851c-9715141d40d3n%40googlegroups.com.
A supercell with at least ~12A in each direction is most likely more efficient than a primitive cell with a large number of k points. CP2K/Quickstep employs localized Gaussian functions as basis set and their interaction range is not impacted by the cell size. Therefore many computational steps do not benefit from a small cell. On the other hand, several features are not yet available with k points and thus, if k points are dispensable, more feature are available.
.
To view this discussion on the web visit https://groups.google.com/d/msgid/cp2k/0e614388-4c59-4540-b3cf-7b54182551f8n%40googlegroups.com.
That’s your decision depending on the system and the properties you are interested in, e.g. you will need k points, if you want to plot the band structure.
On the other hand, a 3x3x3 supercell is roughly equivalent to using 3x3x3 k points with the 1x1x1 cell.
To view this discussion on the web visit https://groups.google.com/d/msgid/cp2k/2e6f2ae5-ad82-4a32-bda2-3dbe4593e7f6n%40googlegroups.com.