Core-Level Photoelectron Spectroscopy Study of UTe${}_2$

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.

arXiv commentaccepted to J. Phys. Soc. Jpn. (2021)

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Cited by in corpus (16)

• Unconventional Superconductivity in UTe2
• Single-component superconducting state in UTe2 at 2 K
• First Observation of de Haas-van Alphen Effect and Fermi Surfaces in Unconventional Superconductor UTe2
• Resonance from antiferromagnetic spin fluctuations for superconductivity in UTe${}_2$
• Magnetic Properties under Pressure in Novel Spin-Triplet Superconductor UTe2
• UTe${}_2$: a nearly insulating half-filled $j=\frac{5}{2}$ $5f^3$ heavy fermion metal
• Identifying f-electron symmetries of UTe2 with O-edge resonant inelastic X-ray scattering
• Magnetovolume Effect on the First-Order Metamagnetic Transition in UTe${}_2$
• Structure of the normal state and origin of Schottky anomaly in the correlated heavy fermion superconductor UTe2
• Metastable phase of UTe${}_2$ formed under high pressure above 5 GPa
• Theory of the low- and high-field superconducting phases of UTe${}_2$
• Quantifying the U $5f$ covalence and degree of localization in U intermetallics
• Pair-Kondo effect: a mechanism for time-reversal broken superconductivity in UTe${}_2$
• UTe${}_2$: a narrow band superconductor
• Quasiparticle interference and spectral function of the UTe${}_2$ superconductive surface band
• Slow magnetic quantum oscillations in the c-axis magnetoresistance of UTe${}_2$