Article ID: 2022-037
Photoelectron momentum maps (PMMs) have the potential to reveal various physical properties of organic molecules adsorbed on the substrate. It has been reported that the multiple scattering theory may be required for precise analysis of the PMMs. However, simulation of the PMMs including the multiple scattering is computationally demanding, which makes the detailed analysis difficult. Here, we propose simple and efficient methods to evaluate the multiple scattering processes, by reducing the number of matrix multiplications. We applied the methods to a copper phthalocyanine molecule and show that the simulated PMMs converges in a few scattering processes with greatly reduced computational time as compared with the standard multiplication method.
