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Report No.

Core-level photoelectron spectroscopy study of UTe$$_{2}$$

Fujimori, Shinichi  ; Kawasaki, Ikuto ; Takeda, Yukiharu  ; Yamagami, Hiroshi; Nakamura, Ai*; Homma, Yoshiya*; Aoki, Dai*

The valence state of $$mathrm{UTe}_2$$ was studied by core-level photoelectron spectroscopy. The main peak position of the $$mathrm{U}~4f$$ core-level spectrum of $$mathrm{UTe}_2$$ coincides with that of $$mathrm{UB}_2$$, which is anitinerant compound with a nearly $$5f^3$$ configuration. However, the main peak of $$mathrm{UTe}_2$$ is broader than that of$$mathrm{UB}_2$$, and satellite structures are observed in the higher binding energy side of the main peak, which are characteristics of mixed-valence uranium compounds. These results suggest that the $$mathrm{U}~5f$$ state in $$mathrm{UTe}_2$$ isin a mixed valence state with a dominant contribution from the itinerant$$5f^3$$ configuration.



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Category:Physics, Multidisciplinary



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