THE CASE FOR ORDER-N METHODS IN LEED THEORY

Low energy electron diffraction experiments have superb sensitivity to surface structure, but rely on sophisticated theory for their interpr etation. Advances in computer power, and developments in the theory it self, enable us to handle surface structures of moderate complexity. F or future advances we must look to a completely new approach and the c ase is made for order-N methods which follow the time evolution of a p oint source of electrons to generate all beams for all angles of incid ence and all energies in one shot.