A study on the holographic transfrom for electron diffraction from surfaces

Abstract

We break down photoelectron diffraction intensities into four terms in analogy to optical holography and discuss the effect of each term on reconstructed images. The second term involving products of scattered waves ΣΣ O i O* j , is in this case not structure-less. Theoreticl analysis and simulations demonstrate that this term may lead to spurious features in real space images in holographic transforms of medium energy electron diffraction patterns. If it is small enough the problem may be overcome by an iterative correction process.