Retrieval of the projected potential by inversion from the scattering matrix in electron-crystal scattering.
The retrieval of a unique crystal potential from the scattering matrix S in high-energy transmission electron diffraction is discussed. It is shown that, in general, data taken at a single orientation are not sufficient to determine all the elements of S. Additional measurements with tilted incident beam are required for the determination of the whole S matrix. An algorithm for the extraction of the crystal potential from the S matrix measured at a single energy and thickness is presented. The limiting case of thin crystals is discussed. Several examples with simulated data are considered.
Allen
LJ
School of Physics, University of Melbourne, Parkville, Victoria 3052, Australia. lja@physics.unimelb.edu.au
Leeb
H
Spargo
AE