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Posted: **Fri Nov 27, 2009 12:48 pm**

Hi all,
L point of Brillouin zone in cartesian coordinates for bulk PbTe with two atoms (units of 2pi/a) is L=(1/2,1/2,1/2).
How this point will look for slab (PbCdTe) with 260 atoms?
Please help
Margo

Posted: **Tue Dec 01, 2009 1:26 pm**

please use group theory to project this point to the 2D BZ opf your slab (orientation)