[Pw_forum] k-points for optical properties

[Paolo Giannozzi]

Hi Eduardo

> Is there any available tool or method to generate non-uniform k-point
> grids (and weights) useful to sample the van-Hove singularities in the
> DOS or the joint DOS for calculations of dielectric function?  

not that I know. If however the goal is to obtain correct van Hove
singularities, with tetrahedra you should obtain them.

Paolo

-- 
 Paolo Giannozzi, Dept. Chemistry&Physics&Environment, 
 Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
 Phone +39-0432-558216, fax +39-0432-558222