Direct methods for adsorbate structure determination using photoelectron diffraction

Abstract

We describe the application of two direct methods for the transformation of scanned-energy mode photoelectron diffraction spectra which are capable of providing useful adsorption site identifications, and which form part of an integrated methodology for quantitative adsorbate structure determination. We draw some comparisons between the principles and proven success of this approach and that of ‘photoelectron holography’. Specific examples given include the adsorption sites of intact and partially reacted ammonia-derived species on Cu(110), the methoxy species, CH 3O-, on Ni(111), and the growth on Fe on Cu(111).