Re: About the lightcone and projected slab mode

On Fri, 16 Nov 2007, Ryan Hao wrote:
>        I have used a non-orthogonal supercell for calvulating
> triangular lattice. That may be the problem.
>        I chose the supercell like this:
>                                       o
>                                     o
>                                  X
>                               o
>                            o

This is partly my fault, because that is what I did in the line-defect.ctl 
example file.  Non-orthogonal supercells work, of course, but doing 
projections is much easier with an orthogonal basis.