Bloch wave symmetries in electron diffraction: applications to Friedels law, Gjonnes-Moodie lines and refraction at interfaces.
We classify the point symmetries at the different points in the Brillouin zone for the 17 two-dimensional space groups and the symmetries of the Bloch waves for the 10 two-dimensional crystallographic point groups. Simple examples involving breakdown of Friedels law, Gjonnes-Moodie lines, and reflection and refraction at interfaces are presented.
Valset
K
K
Department of Physics, University of Oslo, Blindern, P.O. Box 1048, 0316 Oslo, Norway. kjetil.valset@fys.uio.no
Tafto
J
J
D003461:Crystallography / Q000379:methods; D004583:Electrons; D046529:Microscopy, Electron, Transmission / Q000379:methods*; D008962:Models, Theoretical; D014961:X-Ray Diffraction