- den_cutoff - Determines the number of plane waves in the fields (e.g. electron density) expansions.
- real number; >= 0.0; no default
layout_mod; layout_obj; laycutoff
derived from dims, taken as 4*wf_cutoff
Expansion includes plane waves for which G^2 < den_cutoff where G is a wave vector - dims - Numbers of real-space mesh points along the three lattice vectors.
- 3 integers; > 0; no defaults
layout_mod; layout_obj; lay%o%dims
derived from den_cutoff (derived values are used if they are larger than dims)
Values along two lattice vectors related by a space-group operation must be the same
Values may be increased to accomodate radix set of the FFT routine
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