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Quantitative x-ray photoelectron spectroscopy study of Al/AlOx bilayers

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An x-ray photoelectron spectroscopy (XPS) analysis of Nb/Al wedge bilayers, oxidized by both plasma and natural oxidation, is reported. The main goal is to show that the oxidation state¿i.e., O:(oxidize)Al ratio¿, structure and thickness of the surface oxide layer, as well as the thickness of the metallic Al leftover, as functions of the oxidation procedure, can be quantitatively evaluated from the XPS spectra. This is relevant to the detailed characterization of the insulating barriers in (magnetic) tunnel junctions

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Articles publicats en revistes (Física de la Matèria Condensada)

# metadata.dc.title[].value
Quantitative x-ray photoelectron spectroscopy study of Al/AlOx bilayers