title: In situ nanoscale mapping of the chemical composition of surfaces and 3D nanostructures by photoelectron spectromicroscopy.
abstract: We propose a novel approach to extract quantitative chemical maps of surfaces with nanoscale resolution, from the analysis of data from x-ray photoemission electron microscopy, which is a minimally invasive technique. Our formulation allows us to extract chemical maps from the raw data even in cases when not all experimental parameters are well known or controlled. We illustrate our concept by the analysis of a ternary alloy with a nanoscale pattern, to achieve chemical maps of unprecedented quality.
authors.affiliation: Institut National de la Recherche Scientifique-Energie, Matériaux et Télécommunications (INRS-EMT), Université du Québec, 1650 Boulevard Lionel Boulet, J3X 1S2 Varennes, QC, Canada. Istituto di Fisica Applicata, Consiglio Nazionale delle Ricerche (CNR-IFAC), Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy.
authors.forename: Fulvio
authors.initials: F
authors.lastname: Ratto
authors.forename: Stefan
authors.initials: S
authors.lastname: Heun
authors.forename: Oussama
authors.initials: O
authors.lastname: Moutanabbir
authors.forename: Federico
authors.initials: F
authors.lastname: Rosei