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000588614 1001_ $$0P:(DE-H253)PIP1089951$$aMarino, Andrea$$b0
000588614 245__ $$aSinglet magnetism in intermetallic $UGa_2$ unveiled by inelastic x-ray scattering
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000588614 520__ $$aUsing high resolution tender x-ray resonant inelastic scattering and hard x-ray nonresonant inelastic scattering beyond the dipole limit we were able to detect electronic excitations in intermetallic UGa$_2$ that are highly atomic in nature. Analysis of the spectral lineshape reveals that the local 5f$^2$ configuration characterizes the correlated nature of this ferromagnet. The orientation and directional dependence of the spectra indicate that the ground state is made of the $Γ_1$ singlet and/or $Γ_6$ doublet symmetry. With the ordered moment in the ab plane, we infer that the magnetism originates from the higher lying $Γ_6$ doublet being mixed with the $Γ_1$ singlet due to intersite exchange, qualifying UGa$_2$ to be a true quantum magnet. The ability to observe atomic excitations is crucial to resolve the ongoing debate about the degree of localization versus itineracy in U intermetallics.  
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000588614 536__ $$0G:(GEPRIS)387555779$$aDFG project 387555779 - Von versteckter bis antiferromagnetischer Ordnung mit großem Moment in URu2Si2: eine Röntgenstrahluntersuchung der 5f Besetzung und Wellenfunktionssymmetrie. (387555779)$$c387555779$$x2
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000588614 7001_ $$0P:(DE-H253)PIP1028536$$aSundermann, Martin$$b1
000588614 7001_ $$0P:(DE-H253)PIP1096035$$aChristovam, Denise Sacramento$$b2
000588614 7001_ $$aAmorese, Andrea$$b3
000588614 7001_ $$aChang, Chun-Fu$$b4
000588614 7001_ $$0P:(DE-H253)PIP1098467$$aDolmantas, Paulius$$b5
000588614 7001_ $$0P:(DE-H253)PIP1101659$$aSaid, Ayman H.$$b6
000588614 7001_ $$0P:(DE-H253)PIP1029079$$aGretarsson, Hlynur$$b7$$udesy
000588614 7001_ $$0P:(DE-H253)PIP1010052$$aKeimer, Bernhard$$b8
000588614 7001_ $$0P:(DE-H253)PIP1099608$$aHaverkort, Maurits W.$$b9
000588614 7001_ $$aAndreev, Alexander V.$$b10
000588614 7001_ $$00000-0001-9801-7094$$aHavela, Ladislav$$b11
000588614 7001_ $$aThalmeier, Peter$$b12
000588614 7001_ $$0P:(DE-H253)PIP1029973$$aTjeng, Liu Hao$$b13
000588614 7001_ $$0P:(DE-H253)PIP1027074$$aSevering, Andrea$$b14$$eCorresponding author
000588614 773__ $$0PERI:(DE-600)2844160-6$$a10.1103/PhysRevB.108.045142$$gVol. 108, no. 4, p. 045142$$n4$$p045142$$tPhysical review / B$$v108$$x2469-9950$$y2023
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