Figure 5. Calculated and experimental spin polarizations.

Comparison of the spin polarization obtained by in situ SRUPS on a Co₂MnSi thin film with the calculated DOS-derived spin polarization, the calculated UPS spin polarization including broadening effects and considering only bulk states, and the calculated total UPS spin polarization including broadening effects with additional surface state contributions. The theoretical curves were obtained using the SPR-KKR package with Perdew–Burke–Ernzerhof functional and dynamical mean field theory. The error of the Sherman function S=0.42±0.05 (ref. 28)28 results in a relative error of 12% of the spin polarization.