%0 Journal Article
%A Christovam, Denise S.
%A Sundermann, Martin
%A Marino, Andrea
%A Takegami, Daisuke
%A Falke, Johannes
%A Dolmantas, Paulius
%A Harder, Manuel
%A Gretarsson, Hlynur
%A Keimer, Bernhard
%A Gloskovskii, Andrei
%A Haverkort, Maurits W.
%A Elfimov, Ilya
%A Zwicknagl, Gertrud
%A Andreev, Alexander V.
%A Havela, Ladislav
%A Bordelon, Mitchell M.
%A Bauer, Eric D.
%A Rosa, Priscila F. S.
%A Severing, Andrea
%A Tjeng, Liu Hao
%T Stabilization of U 5f<sup>2</sup> configuration in UTe<sub>2</sub> through U 6d dimers in the presence of Te<sub>2</sub> chains
%J Physical review research
%V 6
%N 3
%@ 2643-1564
%C College Park, MD
%I APS
%M PUBDB-2024-05992
%P 033299
%D 2024
%X We investigate the topological superconductor candidate UTe<sub>2</sub> using high-resolution valence-band resonant inelastic x-ray scattering at the U 𝑀<sub>4,5</sub> edges. We observe atomiclike low-energy excitations that support the correlated nature of this unconventional superconductor. These excitations originate from the U 5⁢𝑓2 configuration, which is unexpected since the short Te2-Te<sub>2</sub> distances exclude Te<sub>2</sub> being 2−. By utilizing the photoionization cross-section dependence of the photoemission spectra in combination with band structure calculations, we infer that the stabilization of the U 5⁢𝑓<sub>2</sub> configuration is due to the U 6⁢𝑑 bonding states in the U dimers acting as a charge reservoir. Our results emphasize that the description of the physical properties should commence with a 5⁢𝑓<sub>2</sub> ansatz.  
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001381679000002
%R 10.1103/PhysRevResearch.6.033299
%U https://bib-pubdb1.desy.de/record/614773