We have performed a linearly polarized hard X-ray photoemission (HAXPES) for CeAgSb 2 in the paramagnetic phase. The Ce 3d 5/2 core-level HAXPES spectra show the linear dichroism, reflecting the orbital anisotropy of the 4 f states. The ground state symmetry of the local 4 f electronic states is successfully determined as Γ 6 by using the atomic multiplet calculation based on an ionic model.
The electronic structure of PrAg 2 In has been investigated by soft X-ray absorption spectroscopy (XAS) and linearly polarized hard X-ray photoemission spectroscopy (HAXPES). The Pr M 4,5 XAS shows that the Pr valence of PrAg 2 In is fully trivalent. The experimental linear dichroism in Pr 3d 5/2 core-level HAXPES of PrAg 2 In along the [100] direction is well reproduced by spectral simulations for the Γ 3 doublet ground state.
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