On Aug 20, 2010, at 8:05 AM, Joachim Kalden wrote:
although i defined a hexagonal structure in epsilon, the bands have rather 4fold symmetry (see attachments). I just don't get the clou!(set! geometry-lattice (make lattice (size 4 4 no-size)))
Your cell is square, not hexagonal. See the triangular-lattice example in the MPB tutorial. --SGJ _______________________________________________ mpb-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss
