Abstract
We have determined the ground-state wave functions and crystal-field-level schemes of CeRhSi and CeRuSi using linear polarized soft x-ray-absorption spectroscopy (XAS) and inelastic neutron scattering. We find large crystal-field splittings and ground-state wave functions which are made of mainly = with some amount of in both the compounds. The contribution to the ground state of several members of the CeSi family with Cu, Ru, Rh, Pd, and Au) has been determined with XAS, and the comparison reveals a trend concerning the delocalization of the electrons. Absolute numbers are extracted from scaling to results from hard x-ray photoelectron spectroscopy on CeRuSi by Yano et al. [Phys. Rev. B 77, 035118 (2008)].
- Received 26 August 2011
DOI:https://doi.org/10.1103/PhysRevB.85.035117
©2012 American Physical Society