Surface Patterson function by inversion of low-energy electron diffractionI-V spectra at multiple incident angles - art. no. 036101

An accurate Patterson function, free of artifacts, is obtained by transform ing low-energy electron diffraction I-V spectra at multiple incident angles . The demonstration is carried out using normal incidence measured spectra and calculated spectra at three angles of incidence. The errors between int ensity spots in the Patterson function and known interatomic distances are less than 0.01 Angstrom in the horizontal direction and 0.09 Angstrom in th e vertical direction. The reason for the high accuracy in the horizontal di rection is given.