Core-Level Photoelectron Spectroscopy Study of UTe$_2$

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

doi:10.7566/JPSJ.90.015002

Core-Level Photoelectron Spectroscopy Study of UTe$_2$

Strongly Correlated Electrons 2020-12-21 v1

Authors: 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.

Cite

@article{arxiv.2012.03526,
  title  = {Core-Level Photoelectron Spectroscopy Study of UTe$_2$},
  author = {Shin-ichi Fujimori and Ikuto Kawasaki and Yukiharu Takeda and Hiroshi Yamagami and Ai Nakamura and Yoshiya Homma and Dai Aoki},
  journal= {arXiv preprint arXiv:2012.03526},
  year   = {2020}
}

Comments

accepted to J. Phys. Soc. Jpn. (2021)

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