The Coupled-Resonances Asymmetric Lineshape for Photoemission Spectra.

ABSTRACT: This work introduces the Coupled-Resonances (CR) line shape as a theoretically robust model for analyzing asymmetric peaks in photoelectron spectra, broadly applicable across various materials. The CR line shape extends the conventional Lorentzian distribution by incorporating an interference term that contributes to the peak asymmetry. This new approach addresses limitations of the widely used Doniach- Šunjić (D&S) model, which is often applied beyond its intended scope of metals with high densities of states at the Fermi level due to a lack of viable alternatives. Unlike the DS line shape, the CR model is integrable, enabling its use in precise chemical composition calculations, and it consistently provides superior fits to experimental data. The CR model's versatility is evident in its

SUBMITTER: Herrera-Gomez A 

PROVIDER: S-EPMC12670491 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature