We calculate a set of high-energy spectra, such as the Sm 3d X-ray absorption spectrum and X-ray photoemission spectrum using a configuration-interaction full-multiplet theory to investigate the Sm 4f electronic state of SmOs4Sb12. In the study of SmOs 4Sb12 performed so far, the ground state was expressed by a linear combination of the f5 electron configuration and its charge transfer (CT) states, which indicates that the local symmetry is J = 5/2. In contrast, the present study shows that the ground state expressed by the f 6 electron configuration and its CT states can also reproduce the experiments well. We note that the f6-based ground state, the local symmetry of which is J = 0, is of great advantage for discussing the experimental result that the heavy fermion state of SmOs4Sb 12 is insensitive to the applied magnetic field. We predict that the f6-based ground state will be justified by the Sm 3d X-ray magnetic circular dichroism.
- Mixed valence state
- Nonmagnetic state
- X-ray absorption spectroscopy
- X-ray photoemission spectroscopy
ASJC Scopus subject areas
- Physics and Astronomy(all)