Lineshapes in core-level photoemission from metals .2. 2H-TaS2 and its transition metal intercalates

SHAPER, a computer package for x-ray photoemission lineshape analysis, is applied to experimental data on 2H-TaS2 and some of its transition metal intercalates, revealing that charge transfer into the conduction band resulting from intercalation affects the core-level lineshape by modifying the density of states at the Fermi energy. The observations are discussed in terms of the rigid-band model of intercalation. In order to emphasize the interactive character of the fitting process, and its strengths and limitations, a range of fits of increasing complexity is presented.