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arXiv · 2012.03526

Core-Level Photoelectron Spectroscopy Study of UTe$_2$

Shin-ichi Fujimori·Ikuto Kawasaki·Yukiharu Takeda·Hiroshi Yamagami·Ai Nakamura·Yoshiya Homma·Dai Aoki
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Abstract

The valence state of UTe$_2$ was studied by core-level photoelectron spectroscopy. The main peak position of the U $4f$ core-level spectrum of UTe$_2$ coincides with that of UB$_2$, which is an itinerant compound with a nearly $5f^3$ configuration. However, the main peak of UTe$_2$ is broader than that of 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 U 5$f$ state in UTe$_2$ is in a mixed valence state with a dominant contribution from the itinerant $5f^3$ configuration.

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Shin-ichi Fujimori, Ikuto Kawasaki, Yukiharu Takeda, Hiroshi Yamagami, Ai Nakamura, Yoshiya Homma, Dai Aoki. 2020-12-07. Core-Level Photoelectron Spectroscopy Study of UTe$_2$. https://doi.org/10.7566/jpsj.90.015002

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